If the sum of the digits of a number `(10^n - 1)` is `4707` ,where n is a natural number, then the value of n is :

The sum of the digits of a natural number (10^(n)-1) is 4707, where n is a natural number.The value of n is 477 (b) 523 (c) 532 (d) 704

If the sum of the digits of a number 10^(n) - 1 , where n is a natural number, is equal to 3798, then what is the value of n ?

Sum of 1 to n natural numbers is 36, then find the value of n.

Find the unit digit of the expression 199^(2n)+144^(3n) , where n is a natural number.

Sum of 1 to n natural numbers is 36 . Find the value of n .

If the sum of first n natural numbers is (1)/(78) times the sum of their cubes, then the value of n is

The sum of the cubes of 1st n natural numbers is

What would be the digit in the 10th place of 7^n where 'n' is a natural number greater than 1 ?