What is the greatest number that divides 263, 935 and 1383 leaving a remainder of 7 in each case ?  Choices.
A) 30
B) 31
C) 32
D) 35
E) 37

Rationale: answer the required greatest number is the hcf of 263 - 7 , 935 - 7 , 1383 - 7 i . e . 256 , 928 and 1376 hcf = 32 correct option : c
Answer: C