+0

star problem

0
29
1

In case 1, there are 4 stars shown.

In case 2, there are 6 stars shown.

In case 3, there are 9 stars shown.

How many stars will there be in case 11?

May 18, 2020

#1
+1

I'm just gonna assume that this is a geometric series, since cases 1,2, and 3 can match a geometric series.

The first term is 4, and the common ratio is 3/2. Case 11 will be equal to 4*$$(\frac{3}{2})^{10}$$=$$\frac{3^{10}}{256}$$.

If this is not a geometric series then I don't really know how to help.

May 18, 2020

#1
+1

I'm just gonna assume that this is a geometric series, since cases 1,2, and 3 can match a geometric series.

The first term is 4, and the common ratio is 3/2. Case 11 will be equal to 4*$$(\frac{3}{2})^{10}$$=$$\frac{3^{10}}{256}$$.

If this is not a geometric series then I don't really know how to help.

Guest May 18, 2020