+0  
 
0
126
1
avatar+1399 

10, 8, 6, 4...

 

What is a20 in this arithmetic sequence?

 

A) -32

B) -30

C) -28

D) -26

E) -24

 Oct 2, 2019
 #1
avatar
+1

Nth term = F + D*(N - 1), where F = First term, D = Common difference, N = Term Number

20th term=10 + -2 * (20 - 1)

                  =10 - 2*19

                  =10 - 38

                  = - 28

 Oct 2, 2019

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