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If the sum of the first 40 terms of the series, $3 + 4 + 8 + 9 + 13 + 14 + 18 + 19...........$ is (102)m, then m is equal to:

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Correct option is A

S=3+4+8+9+13+14+18+19........40 terms⇒S=7+17+27+37+47+.....20 terms∴S40=2022×7+1910=1014+190=102040=10220⇒m=20

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If the sum of the first 40 terms of the series, 3+4+8+9+13+14+18+19...........is (102)m, then m is equal to:

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If the sum of the first 40 terms of the series, $3 + 4 + 8 + 9 + 13 + 14 + 18 + 19...........$ is (102)m, then m is equal to: