Question

Ques.》 A positive integer n has 60 divisors and 7n has 80 divisors.
What is the greatest integer k such that
${7}^{k}$
divides n?
(a) O
(b) 1
(c) 2
(d) 3
(Telangana NTSE, 2016-17).....​

Answer 1

Answer:

option d

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Answer 2

Answer:

option d is the correct answer