We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Identify the hidden meaning behind this picture?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

What can you deduce from the following BrainBat?

CRY
LMKI

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?