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Mathematics
Kaia Boone
23 November, 01:23
4. Which term of the AP:3, 8, 13, 18, ..., is 78?
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Mathew Blackwell
23 November, 04:05
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Step-by-step explanation:
The first term of the AP (a) = 3
and common difference (d) = 8-3 = 5
therefore, a + (n-1) d = 78
=> 3 + (n-1) 5 = 78
=> n-1=75/5
=> n-1 = 15
=> n = 16
16th term of the AP is 78
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