Question

A bag contains 20 cards number from 1-20 find A.rob that the no. on the card divide by 2 or 3 b. 2 and 3 c. a prime no​

Answer 1

Answer:

c. prime no

Step-by-step explanation:

because prime numbers means it is divisible by 2 and 3

Answer 2

FINAL ANSWER:-

$A. \frac{13}{20}\\B. \frac{3}{20}\\C. \frac{2}{5}$

GIVEN:-

bag contains 20 cards number from 1-20

TO FIND:-

• no. on the card divide by 2 or 3
• no. on the card divide by 2 and 3 both
• no. on the card divide by prime no.

SOLUTION:-

bag contains a total of 20 cards

each of 1 to 20 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]

A.

$probablity \:of \:getting\:a\:card\:number\: on \:card \:is \:divisible \:by \:2\:or\:3\\=\frac{favorable \:outcomes }{total \:number \:of\:outcomes\:}\\=\frac{(2,3,4,6,8,9,10,12,14,15,16,18,20)}{20}\\=\frac{13}{20}$

B.

$probablity \:of \:getting\:a\:card\:number\: on \:card \:is \:divisible \:by \:2\:and\:3\: both \\=\frac{favorable \:outcomes }{total \:number \:of\:outcomes\:}\\=\frac{(6,12,18)}{20}\\=\frac{3}{20}$

C.

$probablity \:of \:getting\:a\:card\:number\: on \:card \:is \:divisible \:by \:prime \:number \\=\frac{favorable \:outcomes }{total \:number \:of\:outcomes\:}\\=\frac{(2, 3, 5, 7, 11, 13, 17, 19)}{20}\\=\frac{8}{20}\\=\frac{2}{5}$

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