If a , b, c, d are non-zero integers such that `a lt b lt c lt d` and median of a, b, c are both equal to zero, then which one of the following is correct?

If a , b, c, d are non-zero integers such that a lt b lt c lt d and mean and median of a, b, c and d are both equal to zero, then which one of the following is correct?

If a lt b lt c lt 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, d are non-zero integers such that (ab) divides (cd). If a and c are coprime, then which one of the following is correct?

If a, b and c are different integers such that a lt b lt c lt 0 , then which of the following statements is true ?

If a lt b lt c lt d lt e and f(x) =(x-a)^(2) (x-b) (x -c) (x-d) (x-e ) which of the following is true?

If a, b, c and d are positive integers and a lt b lt c lt d such that a,b,c are in A.P. and b,c,d are in G.P. and d-a=30 . Then d-c is k then find the sum of the digits in k

Let a,b,c,d,e, be real numbers such that a+b lt c+d , b+c lt d+e, c+d lt e+a, d+e lt a+b . Then