If `a+b+c+d=0` then `(a+d)^2+(b+d)^2+(c+d)^2` is equal to

If a/b = c/d , then ( ( a +c )/( b + d ) ) is equal to

If a, b, c, d are in G.P., then (a + b + c + d)^(2) is equal to

If a ,b, c ,d are in G.P, then (b-c)^2+(c-a)^2+(d-b)^2 is equal to

If a ,b, c ,d are in G.P, then (b-c)^2+(c-a)^2+(d-b)^2 is equal to

If a ,b ,c ,d are in G.P, then (b-c)^2+(c-a)^2+(d-b)^2 is equal to (a-d)^2 b. (a d)^2 c. (a+d)^2 d. (a//d)^2

If a, b, c and d are in GP, then (a+b+c+d)^(2) is equal to

If a+1=b+2=c+3=d+4=a+b+c+d+5, then (a+b+c+d) is equal to