Question

In the given question, select the related number from the given alternatives.
$7$ $:$ $77$ $:$ $:$ $?$

• A. $6$ $:$ $24$
• B. $8$ $:$ $64$
• C. $11$ $:$ $143$
• D. $3$ $:$ $81$

Answer 1

Answer: (C)

$11$ $:$ $143$

$7\times 11=77$ (The product of 2 consecutive prime numbers)

The next pair of consecutive primes are $11$ and $13$.

$11\times 13=143$

So, $7:77::11:143$

$\therefore$ The correct answer is $11:143$. (option $\left[C\right]$ should be $11:143$)