Question

Which of the following can be used to find out the code for 'Signal'?
(i) $C21Q35I20K67$
(ii) $I20P27G22L29$
(iii) $G22T25Q35W19$
(iv) $C21P20N32U35$.

• A. (ii)
• B. (ii) or (iv)
• C. (i) or (iii)
• D. (i) or (ii)
• E. None of these

Answer 1

The correct option is D (i) or (ii)

Important is common in 3rd and 4th sentences. So, $Important=N36$.

Current is common in 2nd and 3rd sentences. So, $Current=C40$.

Quiz is common in 2nd and 4th sentences. So, $Quiz=T25$.

Marble is common in 1st and 3rd sentences. So, $Marble=M16$.

So, from the 4th sentence, we can say that $Signal$ is either $Q35$ or $G22$.

(iii) has both Q35 and G22. So, it can't be used to find out the code for Signal.

(iv) has neither Q35 nor G22. So, we leave that too.

(i) and (ii) has either one of them. So, these codes can be used to find out the code for Signal.

So, the answer is $\left(i\right)or\left(ii\right)\left[D\right].$