Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What do you answer even though it never asks you questions?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

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?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??