WBJEE 2015 Math Solved Paper

Question : 52 of 80

Marks: +1, -0

Let x1 , x2 , ........... , x15 be 15 distinct numbers chosen from 1 , 2 , 3 , .......... , 15. Then the value of (x1 - 1) (x2 - 1) , (x3−1) .......... (x15 - 1) is