Examveda
Examveda

If a2 = b + c, b2 = a + c, c2 = b + a, then what will be the value of $$\frac{1}{{a + 1}}$$  + $$\frac{1}{{b + 1}}$$  + $$\frac{1}{{c + 1}}$$ ?

A. -1

B. 2

C. 1

D. 0

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & {a^2} = b + c,{\text{ }}{b^2} = a + c,{\text{ }}{c^2} = b + a \cr & {\text{Taking }}a = 2,{\text{ }}b = 2{\text{ and }}c = 2 \cr & {\text{So,}}{\left( 2 \right)^2} = 2 + 2 \cr & \boxed{4 = 4} \cr & {\text{Now,}}\frac{1}{{a + 1}} + {\text{ }}\frac{1}{{b + 1}} + {\text{ }}\frac{1}{{c + 1}} \cr & {\text{Put }}a = 2,{\text{ }}b = 2{\text{ and }}c = 2 \cr & = \frac{1}{{2 + 1}} + {\text{ }}\frac{1}{{2 + 1}} + {\text{ }}\frac{1}{{2 + 1}} \cr & = \frac{1}{3} + \frac{1}{3} + \frac{1}{3} \cr & = 1 \cr} $$

This Question Belongs to Arithmetic Ability >> Algebra

Join The Discussion

Related Questions on Algebra