Sequences and Series
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Free Maths Q & A Practice
1 of 5 free exam-style exercises in this topic
The 5th term of an arithmetic sequence is \(23\), and the 12th term is \(58\). Find the sum of the first \(20\) terms of the sequence.
Term
Formula
Value
5th term
\(a+4d\)
\(23\)
12th term
\(a+11d\)
\(58\)
Select one option.
A
\(920\)
B
\(1010\)
C
\(1100\)
D
\(950\)
E
\(1000\)
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