How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

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

In the image below, can you find the value of an angle(y)

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

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?