Question

3, 72, 129, 173 , 203,?

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Answer 1

Answer:

218

Step-by-step explanation:

The series is

3 + 69=72 ; 72+57=129; 129+44=173; 173+30=203; 203+15=218

69 – 57 = 12; 57 – 44 = 13; 44-30 = 14; 30-15 = 15

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