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

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Riddler_Kia****Member**- Registered: 2005-10-21
- Posts: 2

Here is a difficult math problem. I have been working on it for almost 3 weeks and still have not figured it out ! My math teacher gave this problem to my class as a 'just for fun' thing. It's a difficult, yet fun problem though so I thought to post it here for anyone that wants to solve it.

Problem:

Using 3/4, 3, 3, and 6 and either division, addition, subtraction, or multiplication, you must get an answer of exactly 24. The order of the numbers does not matter. (so to sum it up, make 24 out of 3/4, 3, 3, 6 using only addition, subtraction, division, or multiplication).

Good Luck !

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Look around the site for other puzzles like this to give you inspiration before looking.

Why did the vector cross the road?

It wanted to be normal.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,497

I tried many combinations, finally got it. I first drew the conclusion that 3/4 should figure in the denominator. Thereafter, it was juggling with numbers.

I think the problem has a unique solution. Mathsy beat me, but I should say, it didn't take more than 10 minutes! (There was a gap of more than 90 minutes between my first and second periods of five minutes)

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

**Riddler_Kia****Member**- Registered: 2005-10-21
- Posts: 2

Yay, I finally solved it ^__^! Wow, you are both really fast! I think I saw a problem similar to this one in the forum so I shall now go and try to solve it ^__^

*Last edited by Riddler_Kia (2005-10-25 17:02:58)*

Offline

Pages: **1**