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

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

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

I am an odd number. Take away a letter and I become even. What number am I?

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 ?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What is the largest number you can write with just 3 digits?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?