Find 3 consecutive numbers in A.P.whose sum is 30 and product is 640
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a-d, a, a+d
a - d + a+ a + d = 30
3a = 30
a =10
(a-d) a (a+d) = 640
(10-d) 10 (10+d) = 640
(10 - d) (10 + d) = 64
100 - d² = 64
d² = 36
d = 6
numbers 4, 10, 16
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