A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

Find the hidden tiger in the given optical illusion ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

What can you deduce from the following BrainBat?

CRY
LMKI

Can you find out the missing number in the grid?

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