Mathematics MCQs Police Department PPSC Past Papers Sub Inspector (SI) If average of 5,6,7 and X is 10. What is the value of X? January 2, 2022 Admin No Comments A: 18 B: 22 C: 28 D: 36 Correct Answer: b Short Details: (5+6+7+X) / 4 =10 (18+X) / 4 =10 18+X=10*4 18+X=40 X=40-18=22 View More Details >>
