sum of three term is 30 and there products is 840
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Let the terms be a, b, c
a+b+c=30
abc=840
Let the terms be in ap
a, a-d, a+d
a-d+a+a+d=30
3a=30
a=10
a*a-d*a+d=840
a*a^2 - d^2
a^3 - ad^2 =840
1000-10*d^2 =840
1000-840=10d^2
160=10d^2
16=d^2 d=4
Three numbers are 6,10,14
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