Home
Class 9
MATHS
A spinner is coloured by 3 different col...

A spinner is coloured by 3 different colours-yellow, blue and red in 12 equal sectors. After spinning the wheel, what is the probability that
(i) wheel stops at yellow colour.
(ii) wheel stops at red colour.
(iii) wheel stops at blue colour.

Text Solution

Verified by Experts

(i) `"P(wheel stops at yellow colour)"=(n(Y))/(n(S))=(4)/(12)=(1)/(3)`
(ii)`"P(wheel stops at red colour)"=(n(R))/(n(S))=(3)/(12)=(1)/(4)`
(iii) `"P(wheel stops at blue colour)"=(n(B))/(n(S))=(5)/(12)`
or `"P(blue)=1-((1)/(3)+(1)/(4))=1-(7)/(12)=(5)/(12)`
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    NAGEEN PRAKASHAN|Exercise Problems From NCERT/exemplar|7 Videos

  • PROBABILITY

    NAGEEN PRAKASHAN|Exercise Exercise|12 Videos

  • POLYNOMIALS

    NAGEEN PRAKASHAN|Exercise Revision Exercise (short Answer Questions)|16 Videos

  • QUADRILATERALS

    NAGEEN PRAKASHAN|Exercise Revision Exercise (long Answer Questions)|5 Videos

Similar Questions

Explore conceptually related problems

A spinner is coloured by 3 different colours : yellow, blue and red in 12 equal sectors. After spinning the wheel, what is the probability that wheel stops at yellow colour?

A spinner is coloured by 3 different colours : yellow, blue and red in 12 equal sectors. After spinning the wheel, what is the probability that wheel stops at blue colour?

A spinner is coloured by 3 different colours : yellow, blue and red in 12 equal sectors. After spinning the wheel, what is the probability that wheel stops at red colour?

Strong yellow colour of Ce^(4+) solutions and blood red colour of Sm^(2+) solution arises due to :

Out of 1000 small coloured bulbs 81^(3//2) are of white colour 5^(3) are red coloured , 2^(6) are green coloured & rest are blue coloured . What is the probability that bulb chosen is . (i) blue coloured (ii) red coloured (iii) white coloured .

Eye is more sensitive to yellow colour but danger signals are made with red colour. Why ?

Colour blindess is a recessive sex-linked trait in which the eye fails to distinguish (a) Red and gree colours (b) Red and yellow colours (c) Green and blue colours (d) Red and blue colours

Three faces of a fair die are yellow, two faces red and one face is blue. The die is tossed 3 times. The probability that the colours yellow, red, blue appear is (need not in order)