The total number of digits used in numbering the pages of a book of 366 pages is

There are two numbers such that the first number is four times of the second mumber. If their average is 65, then what is the second number?

Natu and Buchku each have certain number of oranges. Natu says to Buchku, “If you give me 10 of your oranges, I will have twice the number of oranges left with you”. Buchku replies,“If you give me 10 of your oranges, I will have the same number of oranges as left with you”. What is the number of oranges with Natu and Buchku, respectively?

Three different containers contain 130 liter, 442 liter and 234 liter of milk, respectively. What biggest measure can be used to measure all the containers exactly?

If 42573* is exactly divisible by 72, then what will come in place of *?

Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15.

Find the solution of 5x-7=12? 

Find the greatest value of k for which the 6-digit number 24312k is divisible by 6.