What should come in place of the question mark (?) in the given series?
187, 175, 160, 141, 117, ?

Given: 187, 175, 160, 141, 117, ?

Logic: Differences increase as +3, +4, +5…

187 - 175 = 12

175 - 160 = 15

160 - 141 = 19

141 - 117 = 24

Next difference  = 24 + 6 = 30

So, 117 - 30 = 87

Thus, the correct option is (b).