Question

From a bag,containing 7 red,8 black and 5 white balls..3 balls are drawn at random

Answer 1

Find P of getting
1)1 red 2 white
D)not more than 1 red ball

Answer 2

your attempt?
since its not given, we assume that its without replacement

Answer 3

tell 2ndpart:/

Answer 4

2nd part?
pard d) ?

Answer 5

part*

Answer 6

yes

Answer 7

not more than 1 red balls means either 0 red balls OR 1 red ball

Answer 8

yes

Answer 9

So where are you stuck of you know that? -_-

Answer 10

if*

Answer 11

7C0*8C1*5C2/20C3 + 7C1*8C1*5C1/20C3 +8C2*5C1/20C3

Answer 12

smt like this?

Answer 13

ohh! wow! :O

Answer 14

no!

Answer 15

:/

Answer 16

for 0 red balls,

7C0 * 13C3 / 20C3

for 1 red ball
7C1 * 13C2 /20C3

Answer 17

@hartnn >.<

Answer 18

@shubhamsrg

Answer 19

@DLS help..me:|

Answer 20

@hartnn i got it dw :)

Answer 21

@shubhamsrg is correct,
not more than 1 red ball = 0 red +1 red
=7 C0 * 13C3 / 20C3 + 7C1 * 13C2 /20C3

Answer 22

how did you get it but? :|

Answer 23

i wrote sarcastically :P

Answer 24

u told on facebook :3

Answer 25

not more than 1 red ball =either 0 red 'or' 1 red
or =+

Answer 26

Thats what I wanted to hear! B|

Answer 27

:P