Question

number 10 to 20 are written on slips kept into box and mixed looking into it. What is the probability of even number​

Answer 1

there are total 11 numbers from 10 to 20 (when 10 and 20 are also counted)

total even numbers are= 6

probability = total even / total numbers

(p) = 6/11

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Answer 2

Given:-

• 10 to 20 are written on slips and kept Shuffled on a box

To prove:-

• The probability of getting an even number

Solution :-

The Number of even numbers from 10 to 20

are 10,12,14,16,18,20

We include 10 and 20 because it is not between it is 10 to 20 so both includes

• Total there are 11 Natural Numbers from 10 to 20

• Total there are 6 even numbers from 10 to 20

Probability = no of favourable outcomes/total no of outcomes

• Probability = 6/11 = 0.54

$\bold{ \red{★The \: Probability = 0.54}{} }{}$