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the first and the last of an Ap are 6.7 and 17.1 respectively if there are fourteen term in the sequence find it's common difference?
IwuchukwuChris
1 Nov, 2021
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Emmyrosh
4 years ago
Use the formula:
L = F + (n-1)d
where L is the last term, F is the first term, n is the number of terms, and d is the common difference.
17.1 = 6.7 + (14–1)d
17.1–6.7 = 13d
13d = 10.4
d = 10.4 ÷ 13 = 0.8
The common difference is 0.8.
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