Question

A spinner numbered 1-8 is spun once what is the probabilty of spinning an even number

Answer 1

Given,

• A spinner numbered 1-8 is spun once.

To find,

• We have to find the probability of spinning an even number.

Solution,

We can simply find the probability of spinning an even number when a spinner numbered 1-8 is spun once by using the following formula:

              Probability = favorable cases/total number of cases

Total number of cases = 8

Total number of cases = 1,2,3,4,5,6,7,8

Favorable cases = 4

Number of cases of getting even numbers on spinning = 2,4,6,8

Then, the P(of getting an even number on spinning) = 4/8

                                                                                      = 1/2

Hence, a spinner numbered 1-8 is spun once, then the probability of spinning an even number is 1/2.

Answer 2

Concept:

Probability is a way to gauge how likely something is to happen. Many things are difficult to forecast with absolute confidence. Using it, we can only make predictions about how probable an event is to happen, or its chance of happening. Probability can range from 0 to 1, with 0 denoting an impossibility and 1 denoting a certainty. For pupils in Class 10, probability is a crucial subject because it teaches all the fundamental ideas of the subject. A sample space has an overall probability of 1 for all events.

Given information:

A spinner numbered 1-8 is spun one time.

To find:

We need to find the probabilty of spinning an even number.

Solution:

Probability of an event happening = Favorable items/ Total number of items

Total number of spinner numbered = $8$

Even number of spinning = $2,4,6,8$

Probability = $\frac{4}{8}$

                  =$\frac{1}{2}$

Hence, the final answer is $\frac{1}{2}$.

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