What is the value of R in the following set of equations ?
1) $P + Q = 2$
2) $R P + Q = 5$
3) $P + R Q = 7$
one of question asked in my interview.
What is the value of R in the following set of equations ?
1) $P + Q = 2$
2) $R P + Q = 5$
3) $P + R Q = 7$
one of question asked in my interview.
Add 2) and 3) then substitute 1) to get $R \times 2 + 2 = 12$. So R is 5.