Q. 13 The set {1, 2, 4, 7, 8, 11, 13, 14} is a group under multiplication modulo 15. The inverses of 4 and 7 are respectively
(A) 3 and 13
(B) 2 and 11
(C) 4 and 13
(D) 8 and 14
Answer: (C)
Explanation:
Q. 13 The set {1, 2, 4, 7, 8, 11, 13, 14} is a group under multiplication modulo 15. The inverses of 4 and 7 are respectively
(A) 3 and 13
(B) 2 and 11
(C) 4 and 13
(D) 8 and 14
Answer: (C)
Explanation:
