I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Where do you go to learn how to make ice cream?

10+10 and 11+11 can give you the same answer.

Explain how?

If 21x = 79x, what is the value of x?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

Can you place six X (crosses) in below board without making three in a row in any way ?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

I can be cracked, made, told, and played. What am I?