Q.1: What are 5 pairs of co-prime numbers from 80 to 100?

Question

Q.1: What are 5 pairs of co-prime numbers from 80 to 100?

Accepted Answer

Ans: The 5 pairs of co-prime numbers from 80 to 100 are {80,81}, {87,88}, {91,92}, {97,98} and {99,100}.

1,2	2,3	1,51	3,5	13,17
1,3	2,5	1,52	3,7	13,19
1,4	2,7	1,53	3,11	13,23
1,5	2,9	1,54	3,13	13,29
1,6	2,11	1,55	3,17	13,31
1,7	2,13	1,56	3,19	13,37
1,8	2,15	1,57	3,23	13,41
1,9	2,17	1,58	3,29	13,43
1,10	2,19	1,59	3,31	13,47
1,11	2,21	1,60	3,37	13,53
1,12	2,23	1,61	3,41	7,11
1,13	2,25	1,62	3,43	7,13
1,14	2,27	1,63	3,47	7,17
1,15	2,29	1,64	3,53	7,19
1,16	2,31	1,65	3,59	7,23
1,17	2,33	1,66	3,61	7,29
1,18	2,35	1,67	3,67	7,31
1,19	2,37	1,68	3,71	7,37
1,20	2,39	1,69	3,73	7,41
1,21	2,41	1,70	3,79	7,43
1,22	2,43	1,71	3,83	7,47
1,23	2,45	1,72	3,89	7,53
1,24	2,47	1,73	3,97	7,59
1,25	2,49	1,74	5,7	7,61
1,26	2,51	1,75	5,11	7,67
1,27	2,53	1,76	5,13	7,71
1,28	2,55	1,77	5,17	7,73
1,29	2,57	1,78	5,19	7,79
1,30	2,59	1,79	5,23	7,83
1,31	2,61	1,80	5,29	7,89
1,32	2,63	1,81	5,31	7,97
1,33	2,65	1,82	5,37	11,13
1,34	2,67	1,83	5,41	11,17
1,35	2,69	1,84	5,43	11,19
1,36	2,71	1,85	5,47	11,23
1,37	2,73	1,86	5,53	11,29
1,38	2,75	1,87	5,59	11,31
1,39	2,77	1,88	5,61	11,37
1,40	2,79	1,89	5,67	11,41
1,41	2,81	1,90	5,71	11,43
1,42	2,83	1,91	5,73	11,47
1,43	2,85	1,92	5,79	11,53
1,44	2,87	1,93	5,83	11,59
1,45	2,89	1,94	5,89	11,61
1,46	2,91	1,95	5,97	11,67
1,47	2,93	1,96	13,59	11,71
1,48	2,95	1,97	13,61	11,73
1,49	2,97	1,98	13,67	11,79
1,50	2,99	1,99	13,71	11,83
17,19	19,23	1,100	13,73	11,89
17,23	19,29	23,29	13,79	11,97
17,29	19,31	23,31	13,83	31,37
17,31	19,37	23,37	13,89	31,41
17,37	19,41	23,41	13,97	31,43
17,41	19,43	23,43	29,31	31,47
17,43	19,47	23,47	29,37	31,53
17,47	19,53	23,53	29,41	31,59
17,53	19,59	23,59	29,43	31,61
17,59	19,61	23,61	29,47	31,67
17,61	19,67	23,67	29,53	31,71
17,67	19,71	23,71	29,59	31,73
17,71	19,73	23,73	29,61	31,79
17,73	19,79	23,79	29,67	31,83
17,79	19,83	23,83	29,71	31,89
17,83	19,89	23,89	29,73	31,97
17,89	19,97	23,97	29,79	37,41
17,97	29,97	29,89	29,83	37,43
53,59	47,53	43,47	41,43	37,47
53,61	47,59	43,53	41,47	37,53
53,67	47,61	43,59	41,53	37,59
53,71	47,67	43,61	41,59	37,61
53,73	47,71	43,67	41,61	37,67
53,79	47,73	43,71	41,67	37,71
53,83	47,79	43,73	41,71	37,73
53,89	47,83	43,79	41,73	37,79
53,97	47,89	43,83	41,79	37,83
41,97	47,97	43,89	41,83	37,89
59,61	61,67	43,97	41,89	37,97
59,67	61,71	67,71	71,73	73,79
59,71	61,73	67,73	71,79	73,83
59,73	61,79	67,79	71,83	73,89
59,79	61,83	67,83	71,89	73,97
59,83	61,89	67,89	71,97	79,83
59,89	61,97	67,97	83,89	79,89
59,97	7,9	89,97	83,97	79,97
7,33	7,10	7,20	15,16	1,2
7,34	7,11	7,22	16,17	2,3
7,36	7,12	9,34	17,18	3,4
7,38	7,15	9,35	18,19	4,5
7,39	7,16	9,37	19,20	5,6
7,40	7,17	9,38	20,21	6,7
7,42	7,18	9,40	21,22	7,8
9,10	9,22	9,41	22,23	8,9
9,11	9,23	9,43	23,24	9,10
9,13	7,25	9,44	24,25	10,11
9,14	7,26	9,28	25,26	11,12
9,16	7,27	9,29	26,27	12,13
9,17	7,30	9,28	27,28	13,14
9,19	7,32	9,29	28,29	14,15
9,20	7,24	30,31	29,30	34,35
33,34	39,40	31,32	37,38	35,36
41,42	40,41	32,33	38,39	36,37
42,43	55,56	68,69	81,82	94,95
43,44	56,57	69,70	82,83	95,96
44,45	57,58	70,71	83,84	96,97
45,46	58,59	71,72	84,85	97,98
46,47	59,60	72,73	85,86	98,99
47,48	60,61	73,74	86,87	5,8
48,49	61,62	74,75	87,88	5,12
49,50	62,63	75,76	88,89	5,18
50,51	63,64	76,77	89,90	5,16
51,52	64,65	77,78	90,91	5,17
52,53	65,66	78,79	91,92	5,19
53,54	66,67	79,80	92,93	5,21
54,55	67,68	80,81	93,94	99,100

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