It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

When it is alive we sing, when it is dead we clap our hands. What is it?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Decode this picture on T-Shirt and tell what it says ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?