In the picture given below, can you find out which digit will take place of the question mark?

Replace the question mark with the correct number in the below-given picture?

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

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

You can hear me, but you can't touch or see me.

What am I?

Can you find the company name in the pictogram below?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What do you get if you add 2 to 100 four times?

In the image given, you can find several triangles. Can you count them all?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?