+0

# Help 31,32 ​

-1
185
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Help 31,32 May 15, 2018

#1
+1

31.

Area  of the  board  =  pi * 16^2  = 256 pi

Area  of the bulls-eye  = pi *  6^2  =  36 pi

So....the probability  is     36  / 256  =   9/64  ≈  14.1%

32.

P ( prime  or > 4)   =  P(prime) + P (> 4)  - P (prime and  > 4)  =

3/6           +  2/6    -  1/6   =

4/6  =

2/3 May 15, 2018
#2
+2

32.

numbers greater than 4, or prime numbers.

2,3,5,6

4/6

=2/3 May 15, 2018
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