What is the missing number in the series 1,4,10,19,31,__

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1,4,10,19,31,___,64,85 എന്ന ശ്രണിയിലെ വിട്ടുപോയ സംഖ്യ ഏത്?

A43

B46

C45

D49

Answer:

B. 46

Read Explanation:

1+3 = 4 4+6=10 10+9=19 19+12=31 31+15 = 46

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