What least value must be assigned to ‘*’ so that the number 63576 * 2 is divisible by 8?

The ratio of two positive numbers is 3 : 4. The sum of their squares is 400. What is the sum of the numbers?

Sum of two numbers is thrice their difference. Their ratio is 

How may digit are required to write numbers from 1 to 50?

A number is doubled and 9 is added. If the resultant is tripled, it becomes 75. What is that number? 

The sum of three consecutive odd natural numbers each divisible by 3 is 63. What is the largest among them? 

Unit digit in (264)¹⁰²+(264)¹⁰³ is:

Out of six consecutive natural numbers, if the sum of first three is 27, what is the sum of the other three?