Question

5. An urn contains 8 green dotted balls, 10 green striped balls, 12 blue
dotted balls and 10 blue striped balls. If a ball is selected at random
odbogen
from the urn, what is the probability that the ball will be
dot
a. Green or striped
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b. Dotted
Totalidadost
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c. Blue or dotted​

Answer 1

EXPLANATION.

An urn contains 8 green dotted balls,

10 green stripes balls, 12 blue dotted balls,

10 blue striped balls.

Total number of balls = 8 green dotted balls +

10 green striped balls + 12 blue dotted balls +

10 blue striped balls.

Total number of balls = 8 + 10 + 12 + 10

Total number of balls = 40.

1) = probability that the balls will be

dotted.

Dotted balls = 8 + 12 = 20 dotted balls.

= probability = 20/40 = 1/2.

2) = probability of green or striped

balls.

Green or striped = 10 green striped

Green or striped = 10 balls.

= probability = 10/40 = 1/4.

3) = probability of dotted balls.

Dotted balls = 8 green dotted balls + 12

blue dotted balls.

Dotted balls = 8 + 12 = 20 dotted balls.

= probability = 20/40 = 1/2.

4) = probability of blue or dotted balls.

Blue or dotted = 12 blue dotted balls.

= probability = 12/40 = 3/10.

Answer 2

$\huge{\boxed{\rm{\red{Question}}}}$

An urn contains 8 green dotted balls, 10 green striped balls, 12 blue

dotted balls and 10 blue striped balls. If a ball is selected at random

from the urn, what is the probability that the ball will be :

Dot

Green or striped

Dotted

Blue or dotted

$\huge{\boxed{\rm{\red{Answer}}}}$

An urn contain 8 $\large\green{\texttt{green}}$ dotted ball , 10 $\large\green{\texttt{green}}$ striped ball , 12 $\large\blue{\texttt{blue}}$ dotted ball , 12 $\large\blue{\texttt{blue}}$ striped ball.

Total number of ball = 8 green dotted ball + 10 green striped ball + 12 blue dotted ball + 10 blue striped ball.

Total number of ball = 8 + 10 + 12 + 10

Total number of ball = 40

${\bigstar}\large{\boxed{\sf{\pink{Probability \: of \: dotted \: ball}}}}$

Dotted ball = 8 + 12

Dotted ball = 20

Probability = 20 / 40

Probability = 1/2

${\bigstar}\large{\boxed{\sf{\pink{Probability \: of \: green \: and \: striped \: ball}}}}$

Green or striped = 10

Probability = 10/40

Probability = 1/4

${\bigstar}\large{\boxed{\sf{\pink{Probability \: of \: dotted \: ball}}}}$

Dotted ball = 8 green + 12 blue

Dotted ball = 20

Probability = 20/40

Probability = 1/4

${\bigstar}\large{\boxed{\sf{\pink{Probability \: of \: blue \: and \: dotted \: ball}}}}$

Blue or dotted = 12 blue dotted

Probability = 12/40

Probability = 3/10

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