What is so fragile that saying its name breaks it?

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?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

How many triangles can you find in this given picture?

Below rebus represent famous DiCaprio movie. Can you name it?

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?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

What has to be broken before you can use it?