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A and B can do a piece of work in 72 days; B and C can do it
in 120 days; A dn C can do it in 4 days. Who among these
will take the least time if put to do it alone?
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Answer Posted / iram
Answer is A
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f(x,y) =x**2 -y**2 then the value of f(4,(f(1,2) is
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f(X)-f(X-1)=f(X-8) FOR X>5 THEN X=
