Question

than the number of students who can dance; and the
19. The number of students who can play is more by 'a'
number of students who can do both playing and
singing is more by 'b' than the number of students
who can do both singing and dancing. Then, what is
the difference of the number of students who can
only dance and who can only play?
(a) a + b
(b) (2a- b) or (b - 2a)
(c) (a-2b) or (2b-a) (d) (a - b) or (b-a)​

Answer 1

Answer:

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