Question 94

Find the wrong number in the following series.
133, 119, 107, 91, 77

Solution

77 + 14 = 91

91 + 16 = 107

107 + 12 = 119

119 + 14 = 133

91 should be added with 14 so that other numbers will follow the pattern of addition with 14

77 + 14 = 91

91 + 14 = 105

105 + 14 = 119

119 + 14 = 133

here 107 is the wrong number.

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Find the wrong number in the following series.133, 119, 107, 91, 77