Identify the term that will replace the "?"
3, 15, 35, ?, 99, 143

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Solution

The correct option is A 63
The difference between the two terms is 12,20, ?, ? and 44 respectively.
The successive difference between the difference is constant at 8. Therefore, the term replacing the question mark must be the one which maintains the successive difference between the difference at constant 8. Hence, it would be $35 + 28 = 63$

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