Quantitative Aptitude - Arithmetic Ability Questions

A natural number, when divided by 5,6,7 or 8,leaves a remainder of 4 in each case. what is the smallest of all such numbers?

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 16% per annum is Rs 320. What is the value of given sum (in Rs)?

The least number that must be substracted from 63520 to make the result a perfect square is

If a3 + a - 1 = 0 then find the value of a6 + a4 + a - 2

Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

What is the slope of the line parallel to the line passing through the points (-­4,­-6) and (2,­-3)?

9997 x 10003 = ?

On a certain principal if the simple interest for two years is Rs 2800 and compound interest for the two years is Rs 2996, what is the rate of Interest?