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Arithmetic Ability
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Q.
What will come in place of question mark (?) in the following number series ? 4 3 4 7 15 ?
A.
42
B.
44
C.
53
D.
56
View Answer
Correct choice: B
Explanation:
4 3 4 7 15 ? ×1-1 ×1+1 ×2-1 ×2+1 ×3-1 15x3 - 1 = 45 - 1 = 44
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