C.(1) ) Ring the prime numbers.
16
17
19
21
23
27
29
49
53
73
(2)) Ring the composite numbers.
48
49
51
53
67
77
97
103
111
121
16
17
19
21
23
27
29
49
53
73
(2)) Ring the composite numbers.
48
49
51
53
67
77
97
103
111
121
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Answer:
Prime no.19
23
53
73
Composite no.48
49
51
77
111