Press Enter

Share with your friends and help them crack UPSC!

Or Share on

Answer

Correct Option is 72

In row-2
Even number is followed by an odd (non-prime) number so=12-9= 3

Odd number is followed by a perfect square so=3-4= (-1)
So the value of Q= (-1)
In row-1
Odd number is followed by an even number so=9*8= 72

Even number is followed by an odd (prime) number so=72+ (-1) = 71
So difference of the resultant of two rows = 71-(-1) = 72

Get access to all of our verified questions