There are 35 kids in a play school. 26 kids play with white color balls and some kids play with yellow color balls and 19 kids play with both color balls. How many kids use yellow color balls? Select:
A) 12
B) 32
C) 5
D) 28
E) 35
Explanation :   n(AuB)= n(A) + n(B) - n(AnB)....(1)   n(A) = number of kids playing with white color balls = 26   n(AUB) = total number of kids in the play school = 35   n(AnB) = number of kids playing with both white and yellow color balls = 19   we have to find,   n(B) = number of kids playing with yellow color balls   From (1), 35 = 26 + n(B) - 19   n(B) = 35 + 19 - 26= 
<gadget id="calculator">35 + 19 - 26</gadget>
<output>28</output>
28   Hence, Answer is 28 kids play with yellow color   balls.   Answer : 28
<result>D</result>
There are 35 kids in a play school. 26 kids play with white color balls and some kids play with yellow color balls and 19 kids play with both color balls. How many kids use yellow color balls?