Pre-Clac Unit 4 Summative Review

Find the first six terms of the sequence  $a_1=-6$   $a_n=a_{n-1}+4$  

• -6, -2, -8, -14, -20, -26

• -6, -2, 2, 6, 10, 14

• -6, 0, 4, 8, 12, 16

• -6, 5, 6, 7, 8, 9 

Write the first five terms of the given arithmetic sequence $a_n=2n-11$ 

• 2, 22, 222, 2222, 22222

• 2, -7, -25, -61, -132

• -9, -7, -5 , -3, -1 

• 13, 15, 17, 19, 21

For 6, r , 13, ... to be an arithmetic sequence, r must be:

• 9.5

• 3.5

• 7

• 9

Find the indicated term of the sequence.  $a_1=-2,\ r=-4,\ n=6$  

•  $a_6=-8192$  

•  $a_6=2048$  

•  $a_6=48$  

•  $a_6=-2048$  

How many 6-digit numbers can be formed using the digits 3, 4, 5, 6, 7, 8, 9 if repetition is allowed

• 5040

• 117649

• 42

• 720

In how many ways can a varsity golf team of 5 golfers be ranked from a team of 12 players. Is this a combination, a permutation, or neither?

• combination

• permutation

• neither

A baker is putting on a display, in no particular order, of his top 6 cakes out of the 11 he's decorated. How many ways can he present his cakes?

• 332640

• 462

• 66

• 720

How many ways can a president, vice-president, and secretary be chosen from a club with 20 members? Assume that no member can hold more than one office.

• 6840

• 1140

• 60

• 8000

Mr. Messier has found that on the first day of semester 2 the probability that a student brings a pencil to class is 0.963. What is the probability that a student does not bring a pencil?

• 0.963

• 0.037

• 1

• 0.047

What is the probability that the roll of a pair of dice will be a sum of a number lower than 4 or a 10

• $\frac{1}{6}$

• $\frac{1}{36}$

• $\frac{5}{36}$

• $\frac{1}{4}$