The sum of three consecutive terms of an A.P is 36 and their product is 1140. Find
the terms.
[ consider the terms to be in descending order]
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5,12,19
Step-by-step explanation:
suppose, one of the numbers is a
another is a+d and another is a-d
Now, a-d+a+a+d = 36
or, 3a = 36
or, a = 12
again, a*(a+d)*(a-d) = 1140
or, a^2-d^2 = 1140/12 = 95
or, 12^2 - 95 = d^2
or, d^2 = 49
so, d = 7
Now, a - d = 12 - 7 = 5
and a + d = 12 + 7 = 19
thus the numbers are, 5, 12, 19
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