Arun decided to increase the number of push-ups he performs each day

MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series

Problem

Arun decided to increase the number of push-ups he performs each day. On the first day he managed 15 push-ups, and each subsequent day he increased the count by 3. (i) How many push-ups will Arun perform on the 20th day? (ii) Calculate the total number of push-ups Arun performs over the first 20 days.

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