Math Is Fun Forum

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

The solution #4263 is correct, Monox D. I-Fly! Excellent!

#4264. The average of four consecutive even numbers A, B, C, and D is 37. What is the product of A and C?

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

The solution #4263 is correct, Monox D. I-Fly! Excellent!

#4264. The average of four consecutive even numbers A, B, C, and D is 37. What is the product of A and C?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4265. The average weight of 21 girls was recorded as 58 kilograms. If the teacher's weight is also added, the average weight increases by 1 kilogram. What is the weight of the teacher?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4266. Find the missing number if the average of eight numbers is 472.
623, 164, 529, 425, ___, 205, 301, 824.

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4267. The average of four consecutive odd numbers A, B, C, and D respectively is 40. What is the product of B and D?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4268. The average weight of 21 boys was recorded as 64 kilograms. If the weight of the teacher was added, the average increased by 1 kilogram. What is the teacher's weight?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4269. The average height of 21 girls was recorded as 148 centimeters. When the teacher's age is added, the average weight increases by 1 kilogram. What is the weight of the teacher?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4270. Find the missing number if the average of all the eight numbers is 474.
533, 128, 429, 225, ___, 305, 601, 804.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4271. The average of four consecutive numbers A, B, C, and D is 49.5. What is the product of B and D?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4272. The average weight of 15 girls was recorded as 54 kilograms. If the weight of the teacher was added, the average increased by two kilograms. What is the teacher's weight?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4273. The average of four consecutive numbers A, B, C, and D respectively is 56.5. What is the product of A and C?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4274. Find the average of the following set of scores:
432, 623, 209, 378, 908, 168.

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4275. The sum of five consecutive odd numbers is 265. What is the sum of the largest and twice the smallest number?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4276. The average of five numbers is 34.4. The average of the first and the second is 46.5. The average of the fourth and the fifth is 18. What is the third number?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4277. The average of four consecutive odd numbers A, B, C, and D respectively is 54. What is the product of A and C?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4278. Find the average of the following set of scores.
214, 351, 109, 333, 752, 614, 456, 547.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4279. The average age of a woman and her daughter is 19 years. The ratio of their ages is 16:3 respectively. What is the daughter's age?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4280. Average of five numbers is 61. If the average of the first and the third numbers is 69 and the average of the second and fourth is 69, what is the fifth number?

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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.

Monox D. I-Fly

Member

From: Indonesia

Registered: 2015-12-02

Posts: 2,000

Re: Oral puzzles

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

The solution is correct. Excellent, Monox D. I-Fly!

#4281. Average weight of 19 men is 74 kilograms, and the average weight of 38 women is 63 kilograms. What is the average weight (rounded off to the nearest integer) of all the men and the women together?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4282. The average of 9 consecutive positive integers is 63. Find the product of the largest and smallest integers.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4283. Find the average of the first 20 multiples of 7.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4284. The average weight of 15 oarsman in a boat is increased by 1.6 kilograms when one of the crew , who weighs 42 kilograms is replaced by a new man. Find the weight of the new man in kilograms.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

.

#4285. The average height of 16 students is 142 centimeters. If the heights of the teacher is included, the average height increases by 1 centimeter. Find the heights of the teacher.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,425

Re: Oral puzzles

Hi,

#4286. The respective ratio of the ages of son, mother, father, and grandfather is 2:7:8:12. The average of the son and mother is 27 years. What will be the mother's age after 7 years?

---

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.