10+10 and 11+11 can give you the same answer.

Explain how?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Take one out and scratch my head, I am now black but once was red. What am I?

What Time Should the last watch show in the below figure?

Which English verb becomes past tense just by rearranging the letters?

Which is faster, Heat or Cold ? Explain.

What has 13 hearts but no other organs?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

How can you tell a raw egg from a hard-boiled egg?