16. Give an example of a number
(i) which is divisible by 2 but not by 4.
(ii) which is divisible by 4 but not by 8.
(iii) which is divisible by both 2 and 8 but not by 16.
(iv) which is divisible by both 3 and 6 but not by 18.
17. Write (T) for true and (F) for false against each of the foll
(i) If a number is divisible by 4, it must be divisible by
(ii) If a number is divisible by 8, it must be divisible by
(iii) If a number divides the sum of two numbers exactl
bers separately.
(iv) If a number is divisible by both 9 and 10, it must be
Hint. 9 and 10 are co-primes.
(v) A number is divisible by 18 if it is divisible by both
Hint. 3 and 6 are not co-primes. Consider 186.
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(ii) If a number is divisible by 8, it must be divisible by
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