Average of 10 numbers is -10 . Sum of 6 numbers is 100 . What is the average of other 4 numbers?
1)-100
2)-50
3)0
4)100
Average of 10 numbers = (Sum of 10 numbers)/10 = -10
Sum of 10 numbers = -100
sum of 6 numbers = 100
Let sum of other 4 be Y.
100 + Y = -100
Y = -200
So average of 4 numbers = sum of 4 numbers/4 = -200/4
= -50
So 2 Option is the correct answer