What four weights can be used to balance from 1 to 30 pounds?

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?

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

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What number divided by 4 is the same as that number minus 4?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

What word does this rebus represent?

meta meta
meta meta

What number comes next in the series?

5 15 5 18 5 24 14 20 _

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

What is the next number in this matchsticks series riddle?