In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.
840, 168, 42, 14, 7, (.)
A
1
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B
7
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C
9
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D
12
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Solution
The correct option is D 7 The pattern is + 5, + 4, + 3, + 2,.... ∴ Missing number = 7 / 1 = 7.