Question

. 17. A spinner is shown below. Some of the events are listed below, when the spinner is spinned. Event A: The spinner lands on a multiple of 11. Event B: The spinner lands on a number less than 11. Event C: The spinner lands on a number more than 10. Which of the following statement is true about the three events? [CBSE Question Bank] (a) Probability of Event A is 1. so A is a sure event while the probabilities of Events B and Care 0. so they are impossible events. (6) Probability of Event B is 1, so B is a sure event while the probabilities of Events A and Care 0. so they are impossible events.​

Answer 1

                            ANSWER

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Solution: The chances of landing on blue are 1 in 4, or one fourth.

The chances of landing on red are 1 in 4, or one fourth.

DEF- This problem asked us to find some probabilities involving a spinner. An experiment is a situation involving chance or probability that leads to results called outcomes.                                                                                                              

EX- In the problem above, the experiment is spinning the spinner.

DEF- An outcome is the result of a single trial of an experiment. The possible outcomes are landing on yellow, blue, green or red.

EX- An event is one or more outcomes of an experiment. One event of this experiment is landing on blue.

DEF- Probability is the measure of how likely an event is. The probability of landing on blue is one fourth.

The probability of event A is the number of ways event A can occur divided by the total number of possible outcomes. Let's take a look at a slight modification of the problem from the top of the page.

Experiment 1: A spinner has 4 equal sectors colored yellow, blue, green and red. After spinning the spinner, what is the probability of landing on each color?

The possible outcomes of this experiment are yellow, blue, green, and red.

Probabilities:

P(yellow)  =  # of ways to land on yellow  =   1

total # of colors                                                  4  

 

P(blue)  =  # of ways to land on blue  =   1

total # of colors                                                  4  

 

P(green)  =  # of ways to land on green  =   1

total # of colors                                                 4  

 

P(red)  =  # of ways to land on red  =   1

total # of colors                                                  4