SOLUTION: The first term of an arithmetic progression is -12,and the last term is 40. If the sum of the progression is 196,determine the:
(i)the number of terms
(ii)common difference
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Question 1040989: The first term of an arithmetic progression is -12,and the last term is 40. If the sum of the progression is 196,determine the:
(i)the number of terms
(ii)common difference
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
From the sum,
.
.
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