Math

In a group of girls, 20 play volleyball, 21 play badminton and 18 play table tennis; 7 play volleyball only; 9 play badminton only; 6 play volleyball and badminton only and 2 play badminton and table-tennis only.
a)How many play all three games?
b)How many play volleyball and table-tennis only?
c)How many play table-tennis only?
d)How many girls are there altogether?

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  1. IN A CLASS OF 36 GIRLS,18 PLAY NET BALL , 16 PLAY TABLE TENNS WHILE 8 GIRLS PLAY NEITHER THE TWO GAMES. FIND THE NUMBER OF GIRLS WHO PLAY

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