If a + b + c + d = 4, then find the value of 1/(1 - a)(1 - b)(1 - c) + 1/(1 - b) (1 - c) (1 - d) + 1/(1 - c)(1 - d)(1 - a) + 1/(1 - d)(1 - b)(1 - a).

If a + b + c + d = 4, then find the value of 1/(1 - a)(1 - b)(1 - c) +

1.	If a + b + c + d = 4, then find the value of 1/(1 - a)(1 - b)(1 - c) + 1/(1 - b) (1 - c) (1 - d) + 1/(1 - c)(1 - d)(1 - a) + 1/(1 - d)(1 - b)(1 - a).
Answer» If a + b + c + d = 4, then the value of 1/(1 - a)(1 - b)(1 - c) + 1/(1 - b) (1 - c) (1 - d) + 1/(1 - c)(1 - d)(1 - a) + 1/(1 - d)(1 - b)(1 - a) is zero (0). We will be reducingthe given algebraic expression in the question.