Saurabh was asked to find the average of first 'n' natural numbers. By mistake, he added a number twice but he didn't noticed it. As a result, he obtained a wrong average of 31.3. Find the number he added twice?
A certain number is divided by five, seven is added and the result is quadrupled to get a number 15 higher than the original number. What was the first number?
The average of squares of five consecutive even natural numbers is 792. What is the ratio of smallest number to largest number?
Difference between squares of two numbers is 8. Twice the square of first number by square of second number is 19. What are the numbers?
In a rational number, twice the numerator is 2 more than the denominator. If 3 is added to each i.e. the numerator and the denominator, the new fraction is 2/3.
Find the original number?
