- Wed Jun 13, 2012 11:46 pm
- Forum: Discrete Math
- Topic: Multiples, odd numbers, divisibility, primes
- Replies:
**1** - Views:
**4515**

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...

- Wed Jun 13, 2012 11:40 pm
- Forum: Discrete Math
- Topic: Expected Value
- Replies:
**1** - Views:
**1629**

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

(A)1

(B)2

(C)3

(D)5

(E)6