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To go to sleep, Oliver counted by 6s starting from 15. Thus the first few numbers he named were:

 

15,21,27,33...

The last number he named before he fell asleep was 363. How many numbers did Oliver name?

 Sep 24, 2022
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[363  -  15] / 6  +  1 == 59 terms

 Sep 25, 2022

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