NIELIT 2016 MAR Scientist C - Section B: 16

Question

Evaluate the sum $S=1+1+\dfrac{3}{2^{2}}+\dfrac{3}{2^{3}}+\dfrac{5}{2^{4}}+\dots$

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

the sum of first 4 terms is 1+1+3/4+3/8 >3 hence only possible answer is 4