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mathematicsprinted 147 · PDF 148
165 pagesrevision 46935
printed 147 · PDF 148
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Aitchison College Academic Resources.
0580/4,0581/4/O/NO02
4
A wheel is divided into 10 sectors numbered | to 10 as shown in the diagram.
The sectors 1, 2, 3 and 4 are shaded.
The wheel is spun and when it stops the fixed arrow points to one of the sectors.
(Each sector is equally likely.)
(a) The wheel is spun once so that one sector is selected. Find the probability that
i) the number in the sector is even, “o
ii) the sector is shaded, “4%
iii) the number is even or the sector is shaded, Yo
viv) the number is odd and the sector is shaded. o
(b) The wheel is spun twice so that each time a sector is selected. Find the probability that
4) both sectors are shaded, 1@ = Fis ok
ne sector is shaded and one is not, 2& _ &
‘ii) the sum of the numbers in the two sectors is greater than 20, O
“E>, lhe sum of the numbers in the two sectors is less than 4,
> oo) «85
CD too ~ 15
cP,
() the product of the numbers in the two sectors is a square number.
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