A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Mr. Buttons was all set to go to the village of Buttonland to meet his friend. So, he packed his bags and left for the village at 5 in the morning. Upon travelling on a road for miles, he came across a point where the road diverged into two. He was confused on which road to take. He gazed around and he saw two owls sitting on a branch. He thought he could ask for directions for the village from the two owls. So he went to the tree. There he saw a sign which read, "One owl always lies, and one is always truthful. They both fly away if you ask them more than 1 question."
Mr. Buttons was caught in the dilemma of what to ask? And from which owl to ask, since he only had one question. What should Mr. Buttons ask?

What does below Rebus mean ?

esgg sgeg gegs gsge

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Remove two matchsticks to make the below equation correct.

I have branches, but no fruit, trunk or leaves. What am I?

What does does this rebus picture means ?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?