Multiple & Factors

Multiple & Factors Worksheet-7

1. Prime factorization of 143 are:

      A. 2×11×13        B. 11×13             C. 2×3×7           D. none of these

2. The greatest number that will divide 137, 182 and 422 leaving a remainder of 2 in each case is:

      A. 15                   B. 12                    C. 21                   D. none of these

Multiple & Factors Worksheet-8

11. The prime number which comes just after 43 is:

      A. 49                   B. 45                   C. 47                   D. none of these

12. Number of prime numbers from 1 to 50 are:

      A. 18                   B. 12                   C. 15                    D. 20

Multiple & Factors Worksheet-9

1. L.C.M. of 36 and 72 is:

      A. 36                   B. 72                   C. 108                 D. 2

2. L.C.M. of 17 and 5 is:

      A. 105                 B. 95                   C. 85                   D. 5