Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve the rebus riddle in the picture below.

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

Find the 8 in the below-given Image.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Count the number of balls in picture below:

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?