Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Can you identify the hidden rebus in the image below?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

It is always ahead of me yet I can never see it. What is it?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What number when divided in half becomes zero?