Question

24. There are 4 red, 3 black and 5 white balls in a bag. Find the number of ways of selecting
at least one ball from the bag.
d halls in a han Find the number of ways of selecting at least one Ball from the bag​

Answer 1

Step-by-step explanation:

My handwriting is not good but I hope it will be help full for you thanks

Answer 2

alt answer 137 idk why bear with me

number of ways of choosing:

1 b (= 11 b): 3

1r, 1b, 1w  

2 b (= 10 b): 6

2r, 2b, 2w, 1r1w, 1b1w, 1r1b

3 b (= 9 ): 10

3r, 3b, 3w, 2r1w, 2r1b, 2b1w, 2b1r, 2w1b, 2w1r, 1r1b1w

4 b (= 8 b): 14

4r, 4w, 3r1w, 3r1b, 3b1w, 3b1r, 3w1r, 3w1b, 2r2w, 2b2r, 2b2w, 2r1w1b, 2b1w1r, 2w1r1b

5 b (= 7 b): 21 - 2 -2 =17

5w, 4w1r, 4w1b, 4r1w, 4r1b, 3rwb, 3r2w, 3w2b, 3w2r, 3b2r, 3b2w, 3b1r1w, 3r1b1w, 3w1r1b, 2r2w1b, 2r2b1w, 2w2b1r

6 b: 28 - 3 - 4 - 2 - 1 = 18

5w1b, 5w1r, 4w2b, 4w2r, 4r2b, 4r2w, ...  

12 b = 1  

Hence the total no. of ways =  

1+ 2(3+6+10+14+17+18) = 1 + 2*68 = 137

idk