How can you tell a raw egg from a hard-boiled egg?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

During which month do people sleep the least?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

What has many keys but can’t open a single lock?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

What country can make you shiver?

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

What is the next number in this series?

4,12,84,3612....

Kohli and Dhoni decided to have a paintball match.
Kohli told Dhoni, "Sir it is not right as you got thrice the paintballs I have".

Dhoni instantly gives Kohli 10 hit paintballs.
Kohli replied, "Sir, I believe you still have twice the paintballs than I have".

Dhoni gives "?" more paintballs to Kohli.
Kohli replied, "Sir it is even now, Let us have a match".

What is "?".