By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

What is the word or phrase?

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?

What has 88 keys?

How do you go from 98 to 720 using just one letter?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Replace the question mark with the correct number in the below-given picture?

What always comes into a house through the keyhole?