in arthematic progression first two terms are -3,4 then 21 term is..
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Answer:
21 term is 137
Step-by-step explanation:
arithmetic progression is -3,4,......
a = -3
b = 4
d = b - a
= 4 - (-3)
= 4 + 3
= 7
so, a^21 = a + 20d
= -3 + 20(7)
= -3 + 140
= 137
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