What can you deduce from the following BrainBat?

CRY
LMKI

Find out the missing number in the picture attached:

What is next number in the pattern below:

131 517 192 123 ?

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What does this mathematical rebus means ?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

What number when divided in half becomes zero?

The dirtier I get, the whiter I look. Who am I?