If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

How many triangles are there on the puzzle below?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Two old friends, Jack and Bill, meet after a long time.

Three kids
Jack: Hey, how are you, man?
Bill: Not bad, got married and I have three kids now.
Jack: That's awesome. How old are they?
Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Jack: Cool..But I still don't know.
Bill: My eldest kid just started taking piano lessons.
Jack: Oh, now I get it.

How old are Bill's kids?

Solve the mathematical equation in the picture below.

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?