Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

Do you know who was buried in John's tomb?

Can you find out the total number of triangles in the given figure?

Can you find the thief by just looking at the picture below?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What you cannot hold but it is yours?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?