Latest self Aptitude Question SOLUTION: if z(n)=2s(n)+41 where s(n)=sum of first n natural nos find lowest no for which z(n) is prime?? a)6 b)7 c) 40 d)z(n) is always prime

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(#M40018492) SELF question urgent Keep an EYE

if z(n)=2s(n)+41 where s(n)=sum of first n natural nos find lowest no for which z(n) is prime??
a)6 b)7 c) 40 d)z(n) is always prime

naina (11 years ago)

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