If a,b,c,d are positive real number with `a + b + c + d=2` ,then `M =(a+b)(c+d)` satisfies the inequality

If a,b,c,d are positive real number such that a+b+c+d=2 , then M=(a+b)(c+d) satisfies the relation:

If a,b,c,d are positive real numbers such that a+b+c +d = 12 , then M = ( a+ b ) ( c + d ) satisfies the relation :

If a ,b ,c ,d are positive real umbers such that a+b+c+d=2 ,then M=(a+b)(c+d) satisfies the relation (a) 0lt=Mlt=1 (b) 1lt=Mlt=2 (c) 2lt=Mlt=3 (d) 3lt=Mlt=4

If a ,b ,c ,d are positive real umbers such that a+b+c+d=2 ,then M=(a+b)(c+d) satisfies the relation (a) 0lt=Mlt=1 (b) 1lt=Mlt=2 (c) 2lt=Mlt=3 (d) 3lt=Mlt=4

If a,b,c,d are positive real umbers such that a+b+c+d=2, then M=(a+b)(c+d) satisfies the relation (a)0<=M<=1(b)1<=M<=2(c)2<=M<=3(d)3<=M<=4

If a,b,c,d are four positive real numbers such that abcd=1 then least value of (a+4)(b+4)(c+4)(d+4) is

Let a,b,c , d ar positive real number such that a/b ne c/d, then the roots of the equation: (a^(2) +b^(2)) x ^(2) +2x (ac+ bd) + (c^(2) +d^(2))=0 are :

Let a,b,c , d ar positive real number such that a/b ne c/d, then the roots of the equation: (a^(2) +b^(2)) x ^(2) +2x (ac+ bd) + (c^(2) +d^(2))=0 are :

If a, b, c, d, e are positive real numbers, such that a + b +c + d + e = 8 and a^2 + b^2 + c^2 + d^2 + e^2 = 16 , find the range of e.