Number System T...

The product of two numbers is 16,200. If their LCM is 216, find their HCF.

The LCM of two numbers is 72 and their HCF is 12. If one of the numbers is 24, what is the other number?

4a56 is a four digit number divisible by 33. What is the value of a?

A number when divided by 5 leaves a remainder 3. What is the remainder when the square of this number is divided by 5?

A two digit number is such that cube of its 24^th part is same as the number obtained by interchanging the digits of the number. What is the number?

What are the unit digits of 3⁶⁹, 6⁸⁶⁴ and 4⁷²⁵, respectively?

If the last two digits of a four-digit number are interchanged, the new number obtained is greater than the original number by 54. What is the difference between the last two digits of the number?

A number formed by writing any digit 6 times (say as 444444 or 999999) is always divisible by

A positive interger which is nearest to 1000 and divisible by 2, 3, 4, 5 and 6 is

There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and that of the last three is 1001. Find the first number.