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Mathematics 12 Online
OpenStudy (anonymous):

Cards with the numbers 1 through 40 are placed in a box and thoroughly shuffled. What is the probability of randomly selecting a card with a number less than 10 or a multiple of 15?

OpenStudy (anonymous):

A. 3/10 B. 11/40 C. 1/20 D. 7/400

OpenStudy (anonymous):

@pooja195

OpenStudy (anonymous):

b

OpenStudy (anonymous):

@amistre64

OpenStudy (anonymous):

it is not c or d 4 sure

OpenStudy (anonymous):

@pooja195

OpenStudy (anonymous):

@Agl202

OpenStudy (anonymous):

@shifuyanli @dmcdowell @F_Jayyy @Ghostgate @Hero @jacobciezki @kevindragonlord @LazyBoy

OpenStudy (anonymous):

@amistre64

OpenStudy (anonymous):

@pooja195

OpenStudy (anonymous):

@IrishBoy123

OpenStudy (irishboy123):

we just need to count the possible successful candidates first: how many numbers between 1 through 40 are less than 10?

OpenStudy (anonymous):

9

OpenStudy (irishboy123):

i'd go with that and how many numbers between 1 through 40 are a multiple of 15?

OpenStudy (anonymous):

38

OpenStudy (anonymous):

not counting 1 and 40

OpenStudy (anonymous):

so 40

OpenStudy (irishboy123):

a multiple if 15

OpenStudy (anonymous):

oh yah forgot about that

OpenStudy (anonymous):

1, 3, 5, 15

OpenStudy (irishboy123):

nah "multilple" 15 x 1 15 x 2 15 x 3 etc those are the multiples of 15

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

15*1 to !5*2

OpenStudy (irishboy123):

bingo! 15 or 30 so how many cards in that box allows us to select a card with a card with number less than 10 or a card that is a multiple of 15 ?????

OpenStudy (anonymous):

i was correct c

OpenStudy (anonymous):

i have one more

OpenStudy (irishboy123):

new thread!!!

OpenStudy (irishboy123):

and well done!!!

OpenStudy (anonymous):

Hitomi has a bag with four chips in it numbered 1 to 4. She randomly draws a chip and replaces it three times. What is the probability that Hitomi will draw a 1 all three times?

OpenStudy (anonymous):

1/4

OpenStudy (anonymous):

just tell me if i am |dw:1450571986681:dw|

OpenStudy (anonymous):

1/64

OpenStudy (anonymous):

@ikram002p

OpenStudy (anonymous):

@ParthKohli

OpenStudy (anonymous):

passed

OpenStudy (irishboy123):

well done!!

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