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Question:

Which of the following numbers will replace the question mark (?) in the given series?

24, 48, 45, ?, 175, 1050

Explanation:

24, 48, 45, ?, 175, 1050

24 × 2 = 48
48 - 3 = 45
45 × 4 = 180
180 - 5 = 175
175 × 6 = 1050

⇒ ? = 180

Hence, option (d).