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1, 3, 7, 13, 21, __ . ഈ ശ്രേണിയിൽ വിട്ട ഭാഗത്തെ സംഖ്യയേത്?

A23

B34

C31

D35

Answer:

C. 31

Read Explanation:

1 + 2= 3 3 + 4 = 7 7 + 6 = 13 13 + 8 = 21 21 + 10 = 31


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