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

The more of this there is, the less you see. What is it?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Can you find a rabbit in the given picture?

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?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

Why is the longest human nose just 11 inches?