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tamaranim1 [39]
2 years ago
10

What do I do for this question

Mathematics
1 answer:
padilas [110]2 years ago
5 0

Answer:

Step-by-step explanation:

a + 9 = 15

a = 15 - 9

a = 6

c + 9 = 16

     c = 16 - 9

     c = 7

d = c + 9

   = 7 + 9

  = 16

e = d + 15

  = 16 + 15

e = 31

P(selecting a boy) = total boy /total pupils = 16/31

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