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90, 180, 12, 50, 100, 200, (....), 3, 50,4,25,2, 6,30, 3?

Aptitude Quizzes Mathematics Aptitude Test

Question:
90, 180, 12, 50, 100, 200, (....), 3, 50,4,25,2, 6,30, 3

Option A):
225
Option B):
250
Option C):
175
Option D):
150

Correct Answer is Option D):
150

Explanation:
Clearly, 90 = 30x3, 180= 6x30, 12 = 2x6,50 = 25x2, 100 = 4x25, 200 = 50x4. :. Missing number = 3 x 50 = 150.