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Question
In an A.P., a = 10 and d = –3, then find its first four terms.
Sum
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Solution
a = 10, d = –3 ...[Given]
t1 = a = 10
t2 = t1 + d
= 10 – 3
= 7
t3 = t2 + d
= 7 – 3
= 4
t4 = t3 + d
= 4 – 3
= 1
∴ The first four terms of A.P. are 10, 7, 4, 1.
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