Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What kind of storm is always in a rush?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

I can be cracked, made, told, and played. What am I?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?