Mathematics
Which of the following numbers are divisible by 5 or by 10:
(i) 3725
(ii) 48970
(iii) 56823
(iv) 760035
(v) 7893217
(vi) 4500010
Answer
A number is divisible by 5 if its last digit is 0 or 5.
A number is divisible by 10 if its last digit is 0.
(i) 3725 — last digit is 5.
Hence, 3725 is divisible by 5 only.
(ii) 48970 — last digit is 0.
Hence, 48970 is divisible by both 5 and 10.
(iii) 56823 — last digit is 3.
Hence, 56823 is divisible neither by 5 nor by 10.
(iv) 760035 — last digit is 5.
Hence, 760035 is divisible by 5 only.
(v) 7893217 — last digit is 7.
Hence, 7893217 is divisible neither by 5 nor by 10.
(vi) 4500010 — last digit is 0.
Hence, 4500010 is divisible by both 5 and 10.
Related Questions
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(i) 24
(ii) 36
(iii) 84
(iv) 120
Express each of the following numbers as the sum of three odd primes:
(i) 21
(ii) 35
(iii) 49
(iv) 63
Which of the following numbers are divisible by 2, 4 or 8:
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(ii) 723840
(iii) 6531088
(iv) 75689604
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Which of the following numbers are divisible by 3 or 9:
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