Question

Choose or find odd number pair
$(7-84),(6-108),(5-75),(3-99)$

• A. $7-84$
• B. $6-108$
• C. $5-75$
• D. $3-99$

Answer 1

Answer: (A)

$7-84$

In all other pairs, the second number is obtained by multiplying the square of the first number by a prime number..
Thus $108=6^2\times 3,75=5^2\times 3,99=3^2\times 11$