Question

solve it fast

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Answer 1

Explanation:

answer is in the attachment

Answer 2

Explanation:

QUESTION GIVEN ;

SPORT = 40 MEDALS

DANCE = 15 MEDALS

MUSIC = 21 MEDALS

N( U ) = 55

N ( S n D n M) = 6

METHOD TO SOLVE ;

BY THE DIAGRAMMATICAL SET METHOD USING FORMULA

FORMULA USED HERE ;

n( S u D u M ) = n(s) + n( D) + n( m) - n( s n D) - n( s n m) - n ( D n m) + n( s n D n m)

SOLUTIONS :

40 + 15 + 21 - 6 - 6 - 6 - n( s n D) only - n( S n M) only - n( D n M ) only = 55

or, n( s n D)only + n( S n m)only + n( D n m) only = 9 answer