Difference 3802

Determine the second term and the difference AP if a3 = 5 and a1 + a3 = 16.

Correct answer:

a2 =  8
d =  -3

Step-by-step explanation:

a3=5 a1+a3=16 a1=16a3=165=11 a2=(a1+a3)/2=(11+5)/2=8

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