rohanGmat wrote:
The sequence A1 , A2 , ... is defined such that An+1 = \frac{An}{n+1} for all n>1 . How many terms of the sequence is greater than \frac{1}{2} ?
(1) A2 =5
(2) A1 −A2 =5
-Doubt --
1. We are specifically told tha the function is only valid for n>1, however the solution assumes that A2 = \frac{A1}{2} then shouldnt we say for all n>=1 ?
Also shouldnt the question say-- how many terms are (not is)
(1) A2 =5
(2) A1 −A2 =5
-Doubt --
1. We are specifically told tha the function is only valid for n>1, however the solution assumes that A2 = \frac{A1}{2} then shouldnt we say for all n>=1 ?
Also shouldnt the question say-- how many terms are (not is)
I agree with you on this. There should be something said on no. of terms.