When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

Be active and find the killer in the picture Riddle below.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

What Time Should the last watch show in the below figure?

Replace the question mark with the correct number.

Solve the puzzle by telling what does below picture means.

Find the hidden tiger in the given optical illusion ?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.