"If the 11 letters A, B, ..., K denote an arbitrary permutation of he   integers `(1,2,ddot,11),`
Channel: Doubtnut
Date: 2020-06-28

"If the 11 letters A, B, ..., K denote an arbitrary permutation of he
 
  integers `(1,2,ddot,11),`
 then `(A-1)(B-2)(C-3)...(K-11)`
 will be
 a. necessarily zero
 
  b. always odd
 c. always even
 
  d. none of these"