An integer is chosen at random between 1 and 100 find the probability ...
Total number is 98
Divisible by 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96.
So, 12 numbers are divisible by 8
Probability of divisible by 8=12/98
=6/49
Probability of not divisible by 8=86/98
=43/49
An integer is chosen at random between 1 and 100 find the probability ...
Probability of Choosing an Integer Divisible by 8
To find the probability of choosing an integer between 1 and 100 that is divisible by 8, we need to determine the total number of integers between 1 and 100 that are divisible by 8, and then divide it by the total number of integers between 1 and 100.
Finding the Total Number of Integers Divisible by 8
To find the total number of integers between 1 and 100 that are divisible by 8, we can start by identifying the first and last integers in this range that are divisible by 8.
The first integer divisible by 8 is 8 itself, while the last integer divisible by 8 is 96. We can calculate this by dividing 100 by 8 and then multiplying the quotient by 8.
So, the total number of integers divisible by 8 between 1 and 100 is (96 - 8)/8 + 1 = 12.
Finding the Total Number of Integers Between 1 and 100
The total number of integers between 1 and 100 is simply the difference between the last integer (100) and the first integer (1), plus 1.
So, the total number of integers between 1 and 100 is 100 - 1 + 1 = 100.
Calculating the Probability
To calculate the probability of choosing an integer between 1 and 100 that is divisible by 8, we divide the total number of integers divisible by 8 by the total number of integers between 1 and 100.
Probability = (Number of integers divisible by 8) / (Total number of integers between 1 and 100)
Probability = 12 / 100 = 0.12
Therefore, the probability of choosing an integer between 1 and 100 that is divisible by 8 is 0.12 or 12%.
Summary
- The first step is to find the total number of integers between 1 and 100 that are divisible by 8, which is 12.
- The second step is to find the total number of integers between 1 and 100, which is 100.
- Finally, we divide the number of integers divisible by 8 by the total number of integers to calculate the probability, which is 0.12 or 12%.
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