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by theawkwardcellist
Wed Jun 13, 2012 11:46 pm
Forum: Discrete Math
Topic: Multiples, odd numbers, divisibility, primes
Replies: 1
Views: 4673

Multiples, odd numbers, divisibility, primes

2. For the first 1,000 positive integers, how many integers are multiples of 3 or 4? (A)470 (B)480 (C)500 (D)520 (E)550 3. Between 300 and 800, how many integers are multiples of 5 and 8? (A)10 (B)12 (C)300 (D)799 (E)800 4. How many 4 digit numbers between 5,000 and 10,000 are odd numbers? (A)200 (B...
by theawkwardcellist
Wed Jun 13, 2012 11:40 pm
Forum: Discrete Math
Topic: Expected Value
Replies: 1
Views: 1682

Expected Value

1. If the probability of a boy's being born is 1/3, and a family plans to have 6 children, what is the expected number of boys?
(A)1
(B)2
(C)3
(D)5
(E)6

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