Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Move three sticks of the spiral below to form a square.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

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

Prove that twice of ten is the same as twice of eleven.

When does a USA Potato change its nationality?

What makes this number unique: 8,549,176,320?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?