Can you spot the man between the coffee bean in the picture below ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Replace the question mark with the correct number.

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Count the number of balls in picture below: