Can you solve the maths in the below-given picture equation?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

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

which number am I?

What can you see in the middle of March and April that you can never see in any other month?

How many times in a given day, minutes and hour clock comes in a straight line ?

Which tank will fill first?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

Find the next number in the sequence

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

Can you place three balls such that the equation shown in the picture holds true?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?