If S1 = 3, 7, 11 15, … upto 125 terms an...

If `S_1 = 3, 7, 11 15, …` upto 125 terms and `S_2 = 4, 7, 10, 13, 16, …` upto 125 terms the how many terms are there in `S_1` that are there in `S_2` ?

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