If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

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

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

What has no start, end, or centre?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?