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

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Which alphabet letter is a question?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

I cannot talk, but I always reply when spoken to. What am I?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Can you count the number of triangles in the picture below?

Find the next number in the series below

21 32 54 87 131 ?