2. Using divisibility tests, determine which of the following numbers are divisible by
4. by B:
(a) 572 (b) 726352
(c) 5500 (d) 6000 (e) 12159
(f) 14560 (g) 21084 (h) 31795072 (i) 1700 (j)2150
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Answer - a, b, c, d, f, g, h, i
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Answer:
(a) 572
Divisible by 4 as its last two digits are divisible by 4.
Not divisible by 8 as its last three digits are not divisible by 8.
(b) 726352
Divisible by 4 as its last two digits are divisible by 4.
Divisible by 8 as its last three digits are divisible by 8.
(c) 5500
Divisible by 4 as its last two digits are divisible by 4.
Not divisible by 8 as its last three digits are not divisible by 8.
(d) 6000
Divisible by 4 as its last two digits are 0.
Divisible by 8 as its last three digits are 0.
(e) 12159
Not divisible by 4 and 8 as it is an odd number.
(f) 14560
Divisible by 4 as its last two digits are divisible by 4.
Divisible by 8 as its last three digits are divisible by 8.
(g) 21084
Divisible by 4 as its last two digits are divisible by 4
Not divisible by 8 as its last three digits are not divisible by 8.
(h) 31795072
Divisible by 4 as its last two digits are divisible by 4
Divisible by 8 as its last three digits are divisible by 8.
(i) 1700
Divisible by 4 as its last two digits are 0.
Not divisible by 8 as its last three digits are not divisible by 8.
(j) 2150
Not divisible by 4 as its last two digits are not divisible by 4.
Not divisible by 8 as its last three digits are not divisible by 8
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