What does this rebus mean?

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There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Give it food and it will live; give it water and it will die.

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

A father's child, a mother's child, yet no one's son.

Who am I?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Do you know who was buried in John's tomb?

What is the largest number you can write with just 3 digits?