Problem Solving (PS) | Re: If N = 1/3 + 1/3^2 +1/3^3 , then N is between

there are two methods of doing this each method can take upto 50 Secs

First Method
1/3= 33.33%
1/9= 11.11%
1/27 will be 1/9( 33.33%) 3.70 %

addding we get it will be nearly equal to 49 % so the answer will be what

Each choice can be read as

A 0 and 1/9 can be read as 0% to 11% ( No)
B.1/9 and 1/3 can be read as 11% to 33% ( No)
C.1/3 and 8/9 can be read as 33% to 88% ( Ok seems in our range)
D.8/9 and 4/3 can be read as 88% to 133% ( No)
E. 4/3 and 2 can be read as 133% to 200%
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