exam
Maths Puzzle
Numerical Ability
A and B can do a piece of work in 42 days, B and C in 31 days and A and C in 20 days. In how many days can all of them do the work?
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exam Other Question
Simplify (3x^3y)^2
Find the slope and the y-intercept.
y = 7x - 7
Thanks so much!!!!