Why Aeroplane windows are round?

What can you deduce from the following BrainBat?

CRY
LMKI

Can you Find and name the hidden bird in the picture below ?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Can you find the thief by just looking at the picture below?

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

A Miser man decided to go on a vacation for a month. He goes to the bank and asks for a trip loan of $500. The bank officer asks the man that the loan can only be approved when he mortgage some valuable thing at the bank. Miser man mortgages his only car whose worth was a whopping $80000. The Bank officer laughed at him and approve the loan instantly. After vacation when the miser man returns, the bank officer asked him "Are you an idiot, why is your mortgage such an expensive car for such a short loan?".

Miser man replied with some reason and the bank officer agreed that the miser man is actually not an idiot.

What did miser man reply to the bank loan officer?.

Why do we preferably have round manhole covers and not square ones?

What jumps when it walks and sits when it stands?