The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

who is silent in the parliament?

Can you place six X (crosses) in below board without making three in a row in any way ?

What has hands, but can’t clap?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?