Homework Help: Math

Posted by Anonymous on Tuesday, August 4, 2009 at 12:05pm.

If a single letter is drawn from the set{m, a, t, h, e, i, c, s},what is the probability that the letter drawn is a member of the set {m,a,t,h}?

Math - MathMate, Tuesday, August 4, 2009 at 2:36pm
Cardinality (number of members) of the set
A : {m, a, t, h, e, i, c, s} = 8
Cardinality of the set B : {m,a,t,h} = 4
So the probability of drawing a single letter from A that is a member of B equals ?

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