Ex.5.3 Q5 Data Handling Solutions - NCERT Maths Class 8

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Question

If you have a spinning wheel with $$3$$ green sectors, $$1$$ blue sector and $$1$$ red sector, what is the probability of getting a green sector?

What is the probability of getting a non-blue sector?

Text Solution

What is known?

Spinning wheel with $$3$$ green sectors, $$1$$ blue sector and $$1$$ red sector

What is unknown?

i)  probability of getting a green sector

ii) probability of getting a non-blue sector

Reasoning:

Probability \begin{align}= \frac{{{\text{Number of favourable outcomes}}}}{{{\text{Total number of outcomes}}}}\end{align}

Steps:

Total number of sectors $$= 5$$

Total number of green sectors $$= 3$$

Therefore, probability of getting a green sector \begin{align} = \frac{3}{5} \end{align}

Total number of blue sectors $$= 1$$

Total number of non-blue sectors $$= 5 – 1 = 4$$

Therefore, probability of getting a non-blue sector \begin{align} = \frac{4}{5}\end{align}

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