NZ Level 7 (NZC) Level 2 (NCEA)
topic badge
Geometric Series

Interactive practice questions

Consider the series $5+10+20$5+10+20 ...

Find the sum of the first $12$12 terms.

Easy
Approx 3 minutes
Sign up to try all questions

Find the sum of the first $5$5 terms of the geometric sequence defined by $a=2.187$a=2.187 and $r=1.134$r=1.134.

Give your answer correct to two decimal places.

Find the sum of the first $5$5 terms of the geometric sequence defined by $a=-4.186$a=4.186 and $r=-2.848$r=2.848.

Give your answer correct to two decimal places.

Consider the series $1-2+4$12+4 ...

Find the sum of the first $11$11 terms.

Outcomes

M7-3

Use arithmetic and geometric sequences and series

91258

Apply sequences and series in solving problems

What is Mathspace

About Mathspace