jluvit6135
12.12.2020 •
Mathematics
if a bag has 22 orange, 18 red, 12 green and 8 blue marbles what is the probability, that I draw blue marble, keep it, then draw another blue marble?
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Ответ:
14/885 or 1.58%
Step-by-step explanation:
In total, there are 60 marbles. The probability of drawing a blue marble the first time is 8/60. If you keep the one blue marble that was drawn, the total number of marbles in the bag is 59, and there are now 7 blue marbles. The probability of drawing a blue marble now is 7/59.
In order to find out the total probability of drawing two blue marbles in a row, you need to multiply these two fractions.
(8/60) x (7/59) = 56/3540 = 14/885 (approx. 1.58%)
Hope this helps!
Ответ:
13.33333%
Step-by-step explanation:
Ответ:
Rs 15500
Step-by-step explanation:
x = previous salary
0.20x + x = 18600
1.20x = 18600
/1.20 /1.20
x = 15500