1. If a³b = abc = 180 and a, b, c are positive integers, then the value of c is:

 2. (1 - 1/3)(1 - 1/4)(1 - 1/5)...(1 - 1/n) is equal to:

 3. When simplified, the product (2 - 1/3)(2 - 3/5)(2 - 5/7)...(2 - 997/999) is equal to:

 4. (256)^.18 x (256)^.07 is equal to:

 5. Given that (1² +2² + 3² + .... + 10²) = 385, then the value of (2² +4² + 6² + .... + 202) is equal to:

 6. If (64)² - (36)² = 20z, the value of z is:

 7. If x * y = (x +2)² . (y-2), then the value of (7 * 5) is:

 8. If 2^x-1 + 2^x+1 = 320, then the value of x is:

 9. The sum of first 45 natural numbers is:

 10. (51 + 52 + 53 +... + 100) is equal to:

 11. The remainder obtained when 2¹¹ is divided by 5 is:

 12. What least value must be assigned to * so that 86325*6 is divisible by 11?

 13. Which of the following numbers is exactly divisible by 99?

 14. If the number 42573* is completely divisible by 72, then which of the following numbers should replace * in the number?

 15. 5*2 is a three digit number with * as a missing digit. If the number is divisible by 6, the missing digit is:

 16. There is one number which is formed by writing one digit 6 times (e.g. 111111, 444444, etc.). Such number is always divisible by:

 17. Which of the following numbers should be added to 11158 to make it exactly divisible by 77?

 18. The number nearest to 99547 which is exactly divisible by 687 is:

 19. What least number must be subtracted from 13294 so that the remainder is exactly divisible by 97?

 20. What largest number of five digits is divisible by 99?

 21. What smallest number of six digits is divisible by 111?

 22. When a certain number is multiplied by 13, the product consists entirely of fives. The smallest such number is:

 23. A four digit number divisible by 7 becomes divisible by 3, when 10 is added to it. The largest such number is:

 24. Which of the following numbers is exactly divisible by all prime numbers between 1 and 17?

 25. How many numbers between 200 and 600 are divisible by 4, 5 and 6?