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SRE-109<br />
4. a P(Ace) = P(Face-card = 1<br />
P(Ace or Face-card) = +<br />
=<br />
1<br />
N(W) = 3<br />
P 1 (W) =<br />
N(W) = 2<br />
n(R) = 5<br />
P 2 (W) =<br />
P 2 (R) =<br />
-WW<br />
n(R) = 5<br />
4.b -WR 1+1=2<br />
P 1 (R) =<br />
N(W) = 3 P 2 (W) =<br />
-RW<br />
n(R) = 4<br />
P 2 (R) =<br />
-RR<br />
5.a 18 = AB x 12 x 1<br />
AB = 6 cm 1<br />
5.b<br />
1<br />
1<br />
6.a<br />
A=616 cm 2<br />
4r 2 = 616<br />
1<br />
6.b<br />
r=7 cm<br />
(v) =<br />
or, 77 =<br />
r =<br />
1<br />
1<br />
1<br />
7. a 1<br />
0 1<br />
2