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Maths Puzzle
Numerical Ability
How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?
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A work crew of 3 people requires 3 weeks and 2 days to do a certain job. How long would it take a work crew of 4 people to do the same job if each person of both crews works at th
Taylor tosses three coins. The event E is "exactly two coins land heads." What is the probability,P(E) that Taylor tosses exactly two heads?
P(E)=n(E)/n(S)=____/_____???