Select the option that is related to the third number in the same way as the second number is related to the first number: 17 : 152 : : 21 : ?

189 184 188 196

184

n : (n + 2) × 8 17 + 2 ⇒ 19 × 8 = 152 21 : (21 + 2) × 8 = 23 × 8 = 184 So correct answer is (b).