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An arithmetic progression has 4th term 13 and 9th term… | StemPy Lab
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An arithmetic progression has 4th term 13 and 9th term 33. The sum of its first 20 terms is
Mathematics
Easy
High School (11–12)
Algebra › Sequences and Series
A-Level
IB
Created by
StemPy Lab
An arithmetic progression has 4th term
13
13
13
and 9th term
33
33
33
. The sum of its first
20
20
20
terms is
760
760
760
780
780
780
800
800
800
1560
1560
1560
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← For a pair of positive reals p > q, we know only that (p + q)/2 : √pq = 5 : 3. Then p : q equals
How many terms of 4 + 12 + 36 + … add up to 484? →
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Algebra › Sequences and Series
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Created by StemPy LabCreated by StemPy Lab