Pupils doing research which a winter sport do their classmates most
popular. They found that 2/5 of classmates would most like to play hockey, skate prefer 2/9 pupils, 3/10 students prefer skiing and 1/15 classmates don't like any winter sport.

What proportion of pupils loves any other sport than hockey, skating or skiing?

Correct result:

x =  0.0111

#### Solution:

$x=1-2\mathrm{/}5-2\mathrm{/}9-3\mathrm{/}10-1\mathrm{/}15=\frac{1}{90}=0.0111$

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