On a railway route between two places A and B, there are 20 stations on the way. If 4 new stations are
On a railway route between two places A and B, there are 20 stations on the way. If 4 new stations are to be added, how many types of new tickets will be required if each ticket is issued for a one way journey?
(a) 14 (b) 48 (c) 96 (d) 108
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(d) For (10 + A + B) = 12 stations, no of tickets required, when 4 new stations are added for one way journey = 12 × 4 = 48
Also, each 4 new stations require (16 – 1) = 15 new tickets for one way journey.
∴ No. of tickets for 4 new stations = 15 × 4 = 60
Hence, total new tickets = 60 + 48 = 108
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