You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

Count the number of triangles in the below picture?

They are three errirs in this question. Can you find them?

Which is the rope you never skip with?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

There was a strange boy who was born before his father. How can this be possible?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?