If * means adding 6 times the second number to the first number, then (1* 2 ) * 3 equals 21       (b)  31      (c)  91     (d)  93

How many times does the number 5 occur in the range of numbers from 1 to 100? (A) 21 (B) 22 (C) 20 (D) 19

The mean of 5 numbers is 4. If 1 is added to each number , then the new mean is (a) 4 (b) 5 (c) 3 (d) 5.5

If A means -, B means -: , C means + and D means xx , then 15 B 3C 24 A 12 D 2 = ?

Express each of the following numbers as the sum of three odd primes: (a) 21 (b) 31 (c) 53 (d) 61

The real number x when added to its inverse given the minimum value of the sum at x equal to 1(b)-1( c) -2 (d) 2

The sum of three numbers is 2 . If twice the second number is added to the first and third number we get 1 .Adding 5 times the first number to the sum of second and third number we get 6 .Find the three numbers using matrices.(Solve by Inversion Method)

What least number must be added to 1056 to get a number exactly divisible by 23? 2 (b) 3 (c) 21 (d) 25

There are two numbers such that the sum of twice the first number and thrice the second number is 100 and the sum of thrice the first number and twice the second number is 120. Which is the larger number? a. 12 b. 14 c. 32 d. 35