The average of 35 numbers is zero. of them, at the most, how many may be greater than zero?

Mathematics
1

The average of 35 numbers is zero. of them, at the most, how many may be greater than zero?

2

⇒ (x1 + x2 + x3 + .......+ x_{36})/36 = 0

⇒ x1 + x2 + x3 + .......+ x_{36} = 0

⇒ x1 + x2 + x3 + .......+ x_{35} = - x_{36}

It means Atmost 35 number is greater then zero.

∴ 35 numbers can be greater than zero.

Answer: 35