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If a,b,c,d are in G.P. while a-2,b-7,c-9,d-5 are in A.P., then a+b+c+d is divided by?
a)2 b)3 c)5 d)7
2 years ago
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no restriction means digits can be repeated
if first place is filled by I then possible arrangements are 5!/2!
if first place is filled by T then possible arrangements are 5!/(2!*2!)
if first place is...
They are right the answer is 9*10*10*10*10=90000
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