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by BRG on August 19, 2018

Sunday Times Teaser 2916 – Pointless Batting Averages

by Susan Bricket

Published August 12 2018 (link)

When my son was chosen to play cricket for his School First XI, I kept a record of the number of runs he scored in each of his first five innings. After each innings I calculated his batting average (the total number of runs scored so far divided by the number of innings) and found an interesting pattern:

(i) Each score was under 30

(ii) They were all different

(ii) Each of the five averages was a whole number

When he asked me how he could maintain this pattern with his sixth innings, I was able to tell him the smallest score that would achieve this.

What is the largest number this could have been?

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