Which is the correct shadow of the bird?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What has many keys but can’t open a single lock?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?