Is it more likely, equally likely,
or less likely that this spinner lands on red rather than green?
We can see on the diagram that our
spinner has been split into 10 equal sections. Of these, four are blue. Two of the sections are yellow. Two of the sections are green. Finally, two of the sections are
red. In this question, we are interested
in the sections that are red and green.
We have already seen that two out
of the 10 sections are green and two out of the 10 sections are red. As the same number of sections are
red and green, we can say that it is equally likely that the spinner lands on red
Whilst we’re not asked to in this
question, we could write these probabilities as fractions. There is a two-out-of-10 or
two-tenths chance of landing on green or red. This could be simplified to
one-fifth or one out of five. There is a one-in-five chance that
the spinner lands on red and a one-in-five chance that it lands on green.
This is also true of yellow as
there are two yellow sections on the spinner. The probability of landing on blue,
however, would be four-tenths, which simplifies to two-fifths, as four out of the 10
sections are blue.