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7th Grade 9-4 Practice
供稿人: Conard
 NUMBERS How many different 2-digit numbers can be
 formed from thedigits 4, 6, and 8? Assume no number 
can be used more than once
#1
 How many permutations are possible of the letters
 in the word
NUMBERS
#2
no comma
 There are 5 passengers in a car. In how many ways 
can the passengers sit in the 5 passenger seats 
of the car
#3
 Mr. Bernstein owns 14 paintings, but has only enough 
wall space in his home to display three of them at
 any one time: one in the hallway, one in the den,
and one in the parlor. How many ways can Mr.
Bernstein display three paintings in his home
#4
no comma

 Mateo is one of the six dog owners in the terrier
 category. If the owners are selected in a random
 order to show their dogs, how many
ways can the owners show their dogs
#5
 Michel, Jonathan, and two of their friends each ride
 their bikes  to school. If they have an equally-likely
 chance of arriving first, what is the probability that
 Jonathan will arrive first and Michel will arrive
second
#6
 Glen received 6 birthday cards. If he is equally likely
 to read the cards in any order, what is the probability 
he reads the card from his parents and the card
 from his sister before the other cards
#7
 What is the probability that the code number for a new customer will
begin or end with a 7
 A bank gives each new customer a 4-digit code number which allows the new customer to create their own password.  The code number is assigned randomly from the digits  1, 3, 5, and 7, and no digit is repeated.
#8
 What is the probability that the code number will not
 contain a 5
 A bank gives each new customer a 4-digit code number which allows the new customer to create their own password.  The code number is assigned randomly from the digits  1, 3, 5, and 7, and no digit is repeated.
#9
 A bank gives each new customer a 4-digit code number which allows the new customer to create their own password.  The code number is assigned randomly from the digits  1, 3, 5, and 7, and no digit is repeated.
 What is the probability that the code number will 
start with 371
#10
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