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

Which is Odd One Out and why?

4377

3954

9862

8454

9831

How many sides does a circle have?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What is the next shape from answers A, B, C, and D figure?

Can you start the fire using two pieces of wood?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E