Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A bomb exploded in a room full of married couples and no one died. How?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

I can write cow in 13 letters.

Can You?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

In the given picture, in how many ways can you read the word "Tiger"?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?