Question

a bag contains 6 blue marbles 5 yellow marbles 3 white marbles and 1 red marble. what is the probability of not selecting a white marble

Answer 1

`(4)/(5)`

Based on the given conditions, formulate:

`1-(3)/(6+5+3+1)`

Calculate the sum or difference

`1-(3)/(11+3+1)`

`1-(3)/(14+1)`

`1-(3)/(15)`

Cross out the common factor

`1-(1)/(5)`

Find common denominator and write the numerators above common denominator

`(5)/(5)-(1)/(5)`

Write the numerators over common denominator

`(5-1)/(5)`

Calculate the sum or difference

`(4)/(5)`

I hope this helps you

:)

Answer 2

probability: 4/5

Step-by-step explanation:

total marbles: 6 + 5 + 3 + 1 = 15 marbles

\\ not picking white marbles means, picking other marbles except white \\

solve:

`\hookrightarrow \sf (15-3)/(15)`

`\hookrightarrow \sf (12)/(15)`

`\hookrightarrow \sf (4)/(5)`