Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#6451 2019-07-28 00:33:18

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6452 2019-07-28 15:37:34

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,811

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

#6453 2019-07-28 17:45:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6454 2019-07-30 00:55:01

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6455 2019-07-31 16:00:14

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6456 2019-08-01 18:32:17

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6457 2019-08-03 00:26:59

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6458 2019-08-14 00:36:37

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6459 2019-08-16 01:12:08

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

.

#4632. Find the value of

if
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6460 2019-08-18 00:33:42

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

.

#4633. Solve:

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6461 2019-08-18 20:18:28

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,811

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

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

.

The solution #4633 is correct. Good work, Monox D. I-Fly!

#4634. Solve:


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6463 2019-08-19 14:24:55

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,811

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

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6465 2019-08-21 00:59:22

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6466 2019-08-21 14:25:33

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,811

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

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6468 2019-08-23 00:32:17

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

#4638. Evaluate:


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6469 2019-08-25 00:58:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

#4639. Evaluate:

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6470 2019-08-27 00:28:09

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

.

#4640. Find the value of y: (take positive square roots only)

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

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: 1,811

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

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

Good attempt, Monox D. I-Fly!

#4641. Find the value of m.

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6473 2019-08-30 01:22:01

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

Re: Oral puzzles

Hi,

#4642. Find the value of w.

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6474 2019-09-01 00:43:39

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#6475 2019-09-03 00:17:56

ganesh
Administrator
Registered: 2005-06-28
Posts: 28,987

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 is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

Board footer

Powered by FluxBB