Question 1204372
<pre>
If the second and fifth terms of an G.P. are 6 and 48 respectively, 
find the 10th term of the G.P.

<u>a<sub>1</sub></u>, <u>a<sub>2</sub>=6</u>, <u>a<sub>3</sub>=6r</u>, <u>a<sub>4</sub>=48/r</u>, <u>a<sub>5</sub>=48</u>, <u>a<sub>6</sub></u>, <u>a<sub>7</sub></u>, <u>a<sub>8</sub></u>, <u>a<sub>9</sub></u>, <u>a<sub>10</sub>=??</u>

Since {{{a[3]*r=a[4]}}},

{{{6r*r=48/r}}}
{{{r^2=8/r}}}
{{{r^3=8}}}
{{{r=2}}}

{{{a[6] = 48*2=96}}}
{{{a[7] = 96*2=192}}}
{{{a[8] = 192*2=384}}}
{{{a[9] = 384*2=768}}}
{{{a[10] =768*2=1536}}}

Edwin</pre>