The sum of three numbers in an AP is 12 and the sum of their cube is 216
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Step-by-step explanation:
a + a+ 1 + a+ 2 = 12 = 3a = 9 i.e a= 3
a^3 + (a+1)^3 +(a+2)^3 =216
so no are 3,4,5
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