Question

a box contains 21 balls numbered 1 to 21. a ball is drawned. find the probability that ball thrown is even number.

pls answer it correctly.
one who will answer i will mark as brainliest​

Answer 1

Answer:

probability = 1/21

Step-by-step explanation:

a box contain 21 balls

a ball ia drawned 1 to 21

number of ball/ total number of ball =1/21

Answer 2

Step-by-step explanation:

No. of balls = 21

even numbered balls = [2,4,6,8,10,12,14,16,18,20]

No. of even numbered balls = 10

total number of balls = 21

Probability = no. of desirable outcomes/ no. of total outcomes.

                   =10/21

So, your answer is 10/21.

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