If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

They are three errirs in this question. Can you find them?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

I have eight fingers and two thumbs but I do not live. What Am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Find the next number in the series below

21 32 54 87 131 ?

Forwards I am heavy, backward I am not. What am I?

What do you see in the image below