જો WORK = 7935, ROCK = 3587 અને WART = 1945 હોય, તો ક્યો અંક Tને દર્શાવે છે? A. 9 અથવા 1 B. 8 અથવા 1 C. 4 અથવા 5 D. 1 અથવા 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.