In four consecutive prime numbers that are in ascending order, the product of the first three is 385 and that of the last three is 1001. The largest given prime number is
11
13
17
17
B.
13
Let the four consecutive prime numbers be a, b, c and d where a < b < c < d.
∴ abc = 385 and bcd = 1001
∴ HCF = bc
(H.C.F. of 385 and 1001 is 77)
∴ bc = 77
∵ bcd = 1001
