Identify the 10 differences between the two given pictures.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Why are all black people so quick ?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

If you say my name, I will no longer exist. What am I?

A father's child, a mother's child, yet no one's son.

Who am I?

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

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

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?