If `a_1,a_2,a_3,.......a_n`, are 'n', distinct odd natural numbers, not divisible by any prime ...
1,203 views · Published 12 October 2018 · 3:21 · Indexed 26 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `a_1,a_2,a_3,.......a_n`, are 'n', distinct odd natural numbers, not divisible by any prime number greater than 5, then `1/a_1+1/a_2+1/a_3+......+1/a_n` is less than `(a) 15/8 (b) 17/8 (c)19/8 (d) 21/8`
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