Maths Maths Puzzle Category

If 1/a + 1/b + 1/c = 1/(a+b+c) where a + b + c != 0 , abc != 0, what is the value of (a+b)(b+c)(c+a)?

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H nd T method
put a=b=1
c=-1
ans==0
9 years agoHelpfull: Yes(0) No(0)

Maths Other Question

What is The difference between the place value and the face value of 6 in the numeral 856973 1*2+2*3+3*4+-----------+99*100

1) 330033
2)300033
3)330000
4)333000
5)330003
6)333300