The centre of the third figure is empty. What digit should fit inside?

What jumps when it walks and sits when it stands?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Which is faster, Heat or Cold ? Explain.

Can you divide the below-given shape into four equal and identical pieces?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

I have eight fingers and two thumbs but I do not live. What Am I?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

A bomb exploded in a room full of married couples and no one died. How?