যদি WORK = 7935, ROCK= 3587 এবং WART = 1945 হয়, তাহলে কোন অঙ্কটি T হবে? A. হয় 9 বা 1 B. হয় 8 বা 1 C. হয় 4 বা 5 D. হয় 1 বা 4

WORK and ROCK share O, R and K, and their codes share 3, 5 and 7, so W = 9 and C = 8. WART = 1945 contains W (9) and R; the only digit for R common to both is 5. That leaves A and T as 1 and 4 in some order, so T is either 1 or 4.