AS - sequence

What are the first ten members of the sequence if a11=22, d=2.

Correct result:

a10 =  20
a9 =  18
a8 =  16
a7 =  14
a6 =  12
a5 =  10
a4 =  8
a3 =  6
a2 =  4
a1 =  2

Solution:

a10=22−2=20
a9=20−2=18
a8=18−2=16
a7=16−2=14
a6=14−2=12
a5=12−2=10
a4=10−2=8
a3=8−2=6
a2=6−2=4
a1=4−2=2

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