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#6451 2019-07-28 00:33:18
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4265. A bus moving at 40 kilometers per hour covers a distance of 6 hours 15 minutes. If it travels the same distance at 50 kilometers per hour, then how long will it take to cover the distance?
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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#6452 2019-07-28 15:37:34
- Monox D. I-Fly
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- From: Indonesia
- Registered: 2015-12-02
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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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#6453 2019-07-28 17:45:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
The solution #4625 is correct. Neat work, Monox D. I-Fly!
#4626. Evaluate:
(Rounded off to the nearest whole 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.
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#6454 2019-07-30 00:55:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4627. 'A' can do a piece of work in 12 days. 'A' and 'B' together can can complete the same piece of work in 8 days. In how many days can 'B' alone complete the same piece of work?
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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#6455 2019-07-31 16:00:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4628. In a 500 meter race, B starts 45 meters ahead, but A wins the race while B is still 35 meters behind. What is the ratio of the speeds of A and B assuming both start at the same time?
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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#6456 2019-08-01 18:32:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4629. Two numbers are in the ratio 3 : 4. The product of their Greatest Common Divisor (GCD, also known as HCF, Highest Common Factor) and Least Common Multiple (LCM) is 2028. Find the sum of the numbers.
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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#6457 2019-08-03 00:26:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4630. How many numbers consisting of 5 digits can be formed in which the digits 3, 4, and 7 are used only once and the digit 5 is used twice?
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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#6458 2019-08-14 00:36:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4631. The printed price of an article is 40% higher than its cost price. Then, find the rate of discount so that he gains 12% profit.
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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#6459 2019-08-16 01:12:08
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4632. Find the value of
if .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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#6460 2019-08-18 00:33:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4633. Solve:
.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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#6461 2019-08-18 20:18:28
- 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
#6462 2019-08-19 00:02:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
The solution #4633 is correct. Good work, Monox D. I-Fly!
#4634. Solve:
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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#6463 2019-08-19 14:24:55
- 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.
Offline
#6464 2019-08-19 17:16:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
The solution #4634 is correct. Keep it up, Monox D. I-Fly!
#4635. A man rows 40 kilometers upstream in 8 hours and a distance of 36 kilometers downstream is 6 hours. Then, find the speed of the stream.
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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#6465 2019-08-21 00:59:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4636. A father is nine times as old as his son and the mother is eight times as old as the son. The sum of the father's and the mother's age is 51 years. What is the age of the son?
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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#6466 2019-08-21 14:25:33
- 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
#6467 2019-08-21 15:54:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4637. A drainage tile is a cylindrical shell 21 centimeters long. The inside and outside diameters are 4.5 centimeters and 5.1 centimeters respectively. What is the volume of the clay required for the tile? (in terms of pi)
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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#6468 2019-08-23 00:32:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4638. Evaluate:
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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#6469 2019-08-25 00:58:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4639. Evaluate:
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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#6470 2019-08-27 00:28:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4640. Find the value of y: (take positive square roots only)
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.
Offline
#6471 2019-08-27 14:30:57
- 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
#6472 2019-08-28 00:27:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
Good attempt, Monox D. I-Fly!
#4641. Find the value of m.
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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#6473 2019-08-30 01:22:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4642. Find the value of w.
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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#6474 2019-09-01 00:43:39
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
.
#4643. A train crosses a platform in 30 seconds traveling with a speed of 60 kilometers per hour. If the length of the train be 200 meters, then find the length of the platform.
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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#6475 2019-09-03 00:17:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: Oral puzzles
Hi,
#4644. A sum amounts to $480 in 4 years at simple interest. What will it amount to of the rate of interest is increased by 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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