Exercise 3B
Question 1
260, 7018, 20008, 148
Question 2
48, 594, 3096, 609513
Question 3
524, 71316, 8001008
Question 4
365, 7290, 21340, 845
Question 5
516, 7038, 800712
Question 6
464, 4176, 87544, 900392
Question 7
639, 29304, 38457
Question 8
670, 90020, 57390
Question 9
418, 7909, 17743, 10000001
Question 10
Divisible by 2 and 5 only.
Question 11
Divisible by 6, 8, 10 only.
Question 12
(a) Yes, it is also divisible by its factors because 6 & 9 are not co-prime.
(b) No, it is not divisible by their product because 6 & 9 are not co –prime.
Question 13
705 2 4 is divisible by 3.
Question 14
9 3 2760 is divisible by 9.
Question 15
(a) Yes
(b) Yes
(c) Yes
(d) Yes
(e) Yes
(f) Yes
(g) No
(h) Yes
(i) No
Question 16
984 and 1736 are divisible by 8
Sum of 984 and 1736 = 2720, divisible by 8 differences of 1736 and 384= 752, divisible by 8.
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