Question

4. If a <b<c<d and a, b, c, d are non-zero integers,
the mean and median of a, b, c, d is 0, then which
of the following is correct?
(a) b=-c
(6) a=-d
(c) Both (a) and (b) (d) None of these​

Answer 1

Answer:

If median is 0 and as they are arranged in ascending order

then b+c=0

b=-c

if mean is zero

then a+b+c+d/4=0

Since b+c=0

then a+d=0

a=-d

Hope you understand.