(1+25)times25 then divided in half.13 times 25=325
The sum of all integers between 1 and 25 is equal to (25 x (25 - 1))/2 = 325.
The sum of 1 through 250 is 31,375.
There is a formula to calculate this sum. It is, S = ½n(n + 1) In this question, n = 25 so the sum of the numbers from 1-25 is, ½ x 25 x 26 = 325
Pr(Sum > 25) = Pr(Spinner = 30 or 40 and Cube = 6) = Pr(Spinner = 30 or 40)*Pr(Cube = 6) = 2/4 * 1/6 = 1/2*1/6 = 1/12 or 8.33... %
(1 + 25) x 25/2 ie 425. The sum of the first n integers is (n + 1) x n/2
(1+25)times25 then divided in half.13 times 25=325
Yes, 25 is an abundant number because the sum of its proper divisors (1, 5) is greater than the number itself (25 < 6).
The sum of all integers between 1 and 25 is equal to (25 x (25 - 1))/2 = 325.
I still remember my brother taught me this simple math.... First, add 1 with the last number. So, 50 + 1 = 51 Then divide the last number with 2. So, 50/2 = 25 So, 51 X 25 = 1275 Asraf
The sum of 1 through 250 is 31,375.
There is a formula to calculate this sum. It is, S = ½n(n + 1) In this question, n = 25 so the sum of the numbers from 1-25 is, ½ x 25 x 26 = 325
Sum of 1,2, ... , n is n*(n+1)/2 Here, n = 25 so sum = 25*26/2 = 325
Pr(Sum > 25) = Pr(Spinner = 30 or 40 and Cube = 6) = Pr(Spinner = 30 or 40)*Pr(Cube = 6) = 2/4 * 1/6 = 1/2*1/6 = 1/12 or 8.33... %
-- The sum of 25 and any positive number. -- The difference of 25 and any negative number. -- The product of 25 and any positive number greater than '1'. -- The ratio of 25 to any positive number less than '1'. -- 25 raised to any positive power greater than '1'. -- 25 raised to any negative power less than '1'. -- The factorial of any number greater than 5.
25
The sum of the numbers 1 through 27 is 378.