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

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

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

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

Can you decipher the below rebus?

PBLUESAISNUERSES

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?