Question : If $a, b, c$ are all non-zero and $a+b+c=0$, then find the value of $\frac{a^2}{b c}+\frac{b^2}{c a}+\frac{c^2}{ab}$.

Option 1: $3$

Option 2: $4$

Option 3: $1$

Option 4: $\frac{1}{2}$

Question : If $(a^2 = b + c)$, $(b^2 = a + c)$, $(c^2 = b + a)$. Then, what will be the value of $(\frac{1}{a+1}+\frac{1}{b+1}+\frac{1}{c+1})$?

Option 1: –1

Option 2: 2

Option 3: 1

Option 4: 0

Question : If $a+\frac{1}{b}=b+\frac{1}{c}=c+\frac{1}{a}(a\neq b\neq c)$, then the value of $abc$ is:

Option 1: $\pm 1$

Option 2: $\pm 2$

Option 3: $0$

Option 4: $\pm \frac{1}{2}$

Question : If $a+b+c=0$, then the value of $\frac{a^{2}+b^{2}+c^{2}}{ab+bc+ca}$ is:

Option 1: 2

Option 2: –2

Option 3: 0

Option 4: 4

Question : If $\frac{A}{L}+\frac{M}{B}=1$ and $\frac{B}{M}+\frac{N}{C}=1$, then the value of $\frac{L}{A}+\frac{C}{N}$ is:

Option 1: $\frac{B}{M}$

Option 2: 0

Option 3: 1

Option 4: $\frac{M}{B}$