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

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

What is the fastest way to double your money?

What does man love more than life, hate more than death or mortal strife; That which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

What kind of tree can you carry in your hand?

It belongs to you, but other people use it more than you do. What is it?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Why is it against the law for a man living in Delhi to be buried in Mumbai?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?