You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

What is the largest number you can write with just 3 digits?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Can you find out the remainder when 3^300 is divided by 5?

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

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

Find the value of "?" in the ball picture Riddle below:

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?