Consecutive odd or even numbers: average or largest

This type of question, asked 2 times: 16 Sep 2025 S1, 22 Sep 2025 S1. All 2 questions below, oldest first.

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Question 1
16 Sep 2025 S1
19 $What is the average of 5 consecutive odd numbers starting from 13?$
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Question 2
22 Sep 2025 S1
15 $The sum of three consecutive even numbers is 72. What is the largest of these three numbers?$
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