Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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 is at the end of a rainbow?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

What does the below rebus riddle means?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145