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## Answers

= (8-4) = 4

nth term = a+(n-1)d

20 = 4+4n-4

20 = 4n

n = 5

an or last term (l) = 20

first term (a) = 4

sum (s) = n/2 (a+l)

= 5/2 (4+20)

= 5/2 (24)

= 5 x 12 = 60

therefore, answer is 60.

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= (8-4) = 4

nth term = a+(n-1)d

20 = 4+4n-4

20 = 4n

n = 5

an or last term (l) = 20

first term (a) = 4

sum (s) = n/2 (a+l)

= 5/2 (4+20)

= 5/2 (24)

= 5 x 12 = 60

therefore, answer is 60.

mark me best