Find the next number: 12, 13, 18, 27, 40, 57, ?
Find the next number: 12, 13, 18, 27, 40, 57, ?
Answer and solution
Correct answer: A) 78
Differences are 1, 5, 9, 13, 17, growing by 4; next difference 21, so 57 + 21 = 78.
Learn the method: Number Series rules and worked examples · SSC CGL Tier 1 General Intelligence & Reasoning
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