out of 15 items 4 are not good in condition 4 selected at random.Find the probability that (1) All are not good .

Question

out of 15 items 4 are not good in condition 4 selected at random.Find the probability that (1) All are not good .
(2) Two are not good.

in progress 0
Jade 1 month 2021-08-19T00:33:01+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-19T00:34:28+00:00

    Answer:

    1. 4c4/15c4=1/1305

    2.(4c2+11c2)/15c4=61/1365

    0
    2021-08-19T00:34:43+00:00

    Answer:

    (1) All are not good because there are 15 items 8 are not good and 7 are not good because I m not sure for these answer

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )