## anonymous one year ago What is the fifth term of the sequence whose first term is 10 and whose common ratio is ? a. 160 b. 50 c. 12 d. 5/8

1. anonymous

The common ratio is 1/2

2. rishavraj

okay then $a_5 = a_1 \times r^{5- 1}$

3. rishavraj

plug a_1 i.e first term and r i.e common ratio

4. anonymous

what do all the letters stand for? :(

5. anonymous

ohhhhh

6. rishavraj

see the nth term in geometric sequence is $a_n = a_1 \times r^{n - 1}$

7. anonymous

Thanks i got it D was the answer!!

8. rishavraj

yup correct.... :))