Home » Classroom » JAMB Mathematics 2009 Question

Find to infinity the sum of the sequence 1 frac... - JAMB Mathematics 2009 Question

Find to infinity, the sum of the sequence \(1, \frac{9}{10}, \left(\frac{9}{10}\right)^2, \left(\frac{9}{10}\right)^3,.....\)
A
10
B
9
C
10/9
D
9/10
correct option: a

(a=1, r=\frac{9}{10}\

S_n = \frac{a}{1-r}\

S_n = \frac{1}{1-\frac{9}{10}}\

=1\div \frac{1}{10}\

=1\times \frac{10}{1}\

10)

Please share this, thanks:

#JAMB #JAMB

Add your answer

Notice: Please post responsibly.

No responses