Factors & Multiples Worksheet-5

Factors & Multiples Worksheet-5

21. Two numbers which have no other common factor except 1 are called______ numbers.

A. Prime            B. Co-prime      C. Composite    D. Twin prime

22. An example for co-prime number is:

A. 2, 6                 B.  4, 9                C. 11, 33             D. 3, 54

23. LCM of 15, 30 is:

A. 15                    B. 30                   C. 5                      D. 450

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24. ______ is the least prime number.

A. 0                     B. 1                      C. 2                     D. 3

25. The smallest odd number is:

A. 0                     B. 1                      C. 2                     D. 3

26. ______is a composite number.

A. 139                                              B. 133                

C. 97                                                D. None of these

27. The product of all even numbers between 3 and 7 is:

A. 4                     B. 24                             C. 10                             D. 21

Answer Keys

(21)–B; (22)–B; (23)–B; (24)–C; (25)–B; (26)–B; (27)–B