In a jar there are balls in different colors: blue, red, green and yellow.
The probability of drawing a blue ball is 1/5.
The probability of drawing a red ball is 1/5.
The probability of drawing a green ball is 1/10.
If a jar cannot contain more than 50 balls, how many yellow balls are in the Jar? Pick one
A) 5. B) 4. C) 3. D) 2. E) 7.
We need to get some number which is less than 50 and exactly divisible by 5,5 and 10   Lets take LCM of three balls 5,5 and 10 = 10.   The probability of drawing a blue ball is 1/5...For every 8 balls we get 1 BLUE ball then out of 10 balls we get 2 BLUE balls.   The probability of drawing a red ball is 1/5...For every 5 balls we get 1 RED ball then out of 10 balls we get 2 REB balls.   The probability of drawing a green ball is 1/10. For every 10 balls we get 1 GREEN ball then out of 10 balls we get 1 GREEN BALLS.   Then out of 10 - ( 2 + 2 + 1 )= 
<gadget id="calculator">10 - ( 2 + 2 + 1 )</gadget>
<output>5</output>
5 YELLOW balls.   IMO option 5. is correct.
<result>A</result>
In a jar there are balls in different colors: blue, red, green and yellow.
The probability of drawing a blue ball is 1/5.
The probability of drawing a red ball is 1/5.
The probability of drawing a green ball is 1/10.
If a jar cannot contain more than 50 balls, how many yellow balls are in the Jar?