Question

When a six-sided die (numbered 1 to 6 ) is tossed, what is the probability of getting a number N that satisfies 2N-1 less than 4?

Answer 1

the choices
1/6
1/3
1/2
2/3
5/6

Answer 2

Solve 2N - 1 < 4 for N

What do you get?

Answer 3

\[N < 5/2\]

Answer 4

5/2 = 2.5

So N < 5/2 means that N < 2.5

We can take this further to also say N < 2 since N is an integer

Answer 5

So what is the probability of rolling less than a 2?

Answer 6

2/6 which 1/3

oh ok thanks

Answer 7

no

Answer 8

less than 2 (not including 2)

Answer 9

yeah 1 and 2 which 2/6

Answer 10

don't include 2 though

Answer 11

2 is not less than 2

Answer 12

look since N<2.5 then the solutions are 1 and 2 since s is smaller than 2.5

Answer 13

i meant since 2 is less than 2.5

Answer 14

oh wait, I jumped from N < 2.5 to N < 2 because I thought N was an integer

Answer 15

N could be any real number

Answer 16

you got it then

Answer 17

yeah so it is B

Answer 18

yes

Answer 19

thanks

Answer 20

you're welcome