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Arithmetic Ability
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Q.
In the following number series, one of the numbers is wrong. Find it out? 77 79 76 81 75 85
A.
79
B.
81
C.
75
D.
85
View Answer
Correct choice: C
Explanation:
Here in the given series, it follows a pattern that 77 + 2 = 79 79 - 3 = 76 76 + 5 = 81 81 - 7 = 74 74 + 11 = 85 Consecutive adding and subtracting of prime numbers. So the wrong number in the given series is 75.
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