Can you make four (4) nines (9) equal 100?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Find the number of squares in the below-given picture.

Count the number of triangles in the picture below:

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

I am an odd number. Take away a letter and I become even. What number am I?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

The more you take me, the more you leave me behind.
Who Am I?