Which of the following numbers will replace the question mark (?) in the given series? 3, 7, 13, 21, 31, ?

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A43

B41

C42

D44

Answer:

3, 7, 13, 21, 31, ? 3 + 4 = 7 7 + 6 = 13 13 + 8 = 21 21 + 10 = 31 Similarly, 31 + 12 = 43.

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ഇനിപ്പറയുന്ന സമവാക്യം ശരിയാക്കുന്നതിന് ഏത് രണ്ട് സംഖ്യകൾ പരസ്പരം മാറ്റണം?

3 – 4 + 12 × 6 ÷ 8 = 28