Arithmetic and Geometric Sequence
1) If the first and 10th term of an arithmetic sequence are 3 and 30 respectively, find the 40th term
of the sequence.
2) Find the sum of the first 30 terms in the arithmetic sequence: 3, 8, 13, 18, …
3) Find the 9th term in the geometric sequence 3, 12, 48, …
4) Find the sum of the first ten terms of the geometric sequence: 1, 1.05, 1.052, …
5) Find the sum of all even numbers between 31 and 87.
6) 20 people live on the first floor of the building, 34 people on the second floor and 48 people on
the third floor and so on. This building has five floors. What’s the total number of people living
in the building?
Mathbot Says...
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