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How do you calculate the mean from 7 26 5 19 12 38?
Put the numbers in order and add all the numbers together then divide by how many numbers you have. So, in this case, you add 5+7+12+19+26+38 which equals 107 then divide 107 by 6 in this case
How do you divide 26 and 18?
you can simply divide numbers using fractions.26/18= 13/9= 1 and 4/9
There are 38 numbers on a roulette wheel and I bet 12 of them. What is the probability of not hitting one of my numbers on 11 consecutive spins?
If the probability of an event will occur is p, then the probability that it will occur in n trials is pn.(That's p raised to the n power). So if you bet on 12 numbers, then (38-12=26) numbers are empty. The probability of the ball landing on one of these empty numbers is 26/38. So (26/38)^11 = 0.01538, which is about 1.538 % or a 1 in 65 chance.
What is the difference between the sum of all even numbers and odd numbers from 25 to 100?
The sum of the even numbers is (26 + 28 + ... + 100); The sum of the odd numbers is (25 + 27 + ... + 99) Their difference is: (26 + 28 + ... + 100) - (25 + 27 + ... + 99) = (26 - 25) + (28 - 27) + ... + (100 - 99) = 1 + 1 + ... + 1 There are (100 - 26) ÷ 2 + 1 = 38 terms above which are all 1; their sum is 38 x 1 = 38. So the difference of the sum of all even numbers and all odd numbers 25-100 is 38.
How do you simplify ratio 38 over 52?
You look for a common factor between the two numbers; then you divide both numbers by this factor.
