If it took eight men ten hours to build a wall, how long would it take four men to build it?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What Adam and Eve do not have but the rest of the people have?

I am an odd number. Take away a letter and I become even. What number am I?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

What has no start, end, or centre?

What is the next shape from answers A, B, C, and D figure?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Can you count the number of squares in the given picture?