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#5676 2018-01-20 17:29:03
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3887. A number is selected at random from first 50 natural numbers. Find the probability of it being a multiple of 3 and 4.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5677 2018-01-21 11:20:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3888. All the black face cards are removed from a pack of 52 cards. The remaining cards are well shuffled and then a card is drawn at random. Find the probability of getting a
(i) face card
(ii) red card
(iii) black card
(iv) king.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5678 2018-01-23 00:14:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3889. A bag contains three green marbles, four blue marbles, and two orange marbles. If a marble is picked at random, then find the probability of it not being an orange marble.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5679 2018-01-23 12:57:24
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5680 2018-01-23 14:34:52
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3889 is correct. Neat work, Monox D. I-Fly!
#3890. In a single throw of a die, find the probability of getting a multiple of 3.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5681 2018-01-23 14:41:55
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5682 2018-01-23 16:49:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3890 is correct. Neat work, Monox D. I-Fly!
#3891. A number x is chosen at random from the numbers -3, -2, -1, 0, 1, 2, and 3. Find the probability of |x| < 2.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5683 2018-01-23 17:42:34
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5684 2018-01-23 18:34:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3892 is correct. Excellent, Monox D. I-Fly!
#3893. If a digit is drawn at random from the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9, find the probability of
(i) it being odd
(ii) it being even
(iii) it is a multiple of 3.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5685 2018-01-23 18:39:52
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5686 2018-01-23 21:10:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3893 (three parts) is correct. Wonderful, Monox D. I-Fly!
#3894. If three coins are tossed simultaneously, find the probability of getting at least two heads.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5687 2018-01-25 00:27:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3895. A number is selected at random from the numbers 3,5,5,7,7,7,9,9,9, and 9. Find the probability of the selected number being the average.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5688 2018-01-27 00:27:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3896. In a single of throw of a pair of dice, find the probability of getting the sum of a square.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5689 2018-01-28 20:19:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3897. A number is selected from first 50 natural numbers. What is the probability of it being a multiple of 3 or 5?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5690 2018-01-29 03:04:48
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5691 2018-01-29 16:54:49
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3897 is correct. Magnificent, Monox D. I-Fly!
#3898. 'A' sold 100 lottery tickets is which 5 tickets carry prizes. If 'B' purchased a ticket, what is the probability of 'B' winning a prize?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5692 2018-01-29 16:56:15
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3897 is correct. Magnificent, Monox D. I-Fly!
#3898. 'A' sold 100 lottery tickets is which 5 tickets carry prizes. If 'B' purchased a ticket, what is the probability of 'B' winning a prize?
#3899. If P(E) = 0.05, then P(not E) = ?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5693 2018-01-30 12:58:15
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5694 2018-01-30 15:59:50
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solutions #3898 and #3899 are both correct. Neat work, Monox D. I-Fly!
#3900. The probability of guessing the correct answer to a certain question is x/12. If the probability of not guessing the correct answer to this question is 2/3, then find the value of x.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5695 2018-01-30 17:54:56
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5696 2018-01-30 18:33:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solution #3900 is correct. Neat work, Monox D. I-Fly!
#3901. A card is accidentally dropped from a pack of 52 cards. Find the probability of it being an ace.
#3902. A number is selected from numbers 1 to 25. Find the probability of it being prime.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5697 2018-01-30 18:57:46
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Since when did you start double questions?
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5698 2018-01-30 19:33:39
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
The solutions #3901 and #3902 are both correct. Neat work, Monox D. I-Fly!
In some cases, the puzzles are relatively simple. That's the reason I put two puzzles.
#3903. Find the probability of throwing a number greater 2 with a fair dice.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5699 2018-01-31 18:38:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3904. One card is drawn from a well shuffled deck of 52 playing cards. What is the probability of getting a non-face card?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#5700 2018-02-01 18:54:52
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,426
Re: Oral puzzles
Hi,
#3905. A die is thrown once. Find the probability of getting (i) a prime number (ii) a number between 2 and 6.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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