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How much greater is the sum of the first 20 counting numbers than the sum of the first 10 counting numbers?
It is 155 greater.
What is the sum of the first 25 multiples of 12?
The sum of the first 25 numbers is 25*26/2 = 325 So the sum of the first 25 multiples of 12 is 325*12 = 3900
What is the sum of the first 15 multiples of 8?
Sum of the first 15 positive integers is 15*(15+1)/2 = 120 Sum of the first 15 multiples of 8 is 8*120 = 960
What is the sum of the first 4 multiples of 5?
5 + 10+15+20=50 ans
What The sum of two decimals greater than 0.5 is always greater than 1?
The sum of two decimal numbers greater than 0.5 will always be greater than 1
What is the sum of the first three multiples of six which of greater than 15?
72
What is the sum of the first 10 multiples of 3?
The sum of the first 10 multiples of 3 is 165.
How much greater is the sum of the first 20 counting numbers than the sum of the first 10 counting numbers?
It is 155 greater.
What is the sum of the first 25 multiples of 12?
The sum of the first 25 numbers is 25*26/2 = 325 So the sum of the first 25 multiples of 12 is 325*12 = 3900
What is the sum of the first 15 multiples of 8?
Sum of the first 15 positive integers is 15*(15+1)/2 = 120 Sum of the first 15 multiples of 8 is 8*120 = 960
What is the sum of numbers that are multiples of 4 less than 100?
Their sum is 1200.
What is the first number greater than 2016 such that the sum of its digits is the same as the sum of the digits of 2016?
2025.
What is the sum of all integers not greater than 10000 that are not divisible by 7?
This is easiest to answer by summing all the numbers 1-10000 and subtracting the sum of the multiples of 7 (7, 14, 21, ..., 9996). The sum of a series is: S = (first + last) x number_of_terms / 2 For for 1-10000, the sum is: S1 = (1 + 10000) x 10000 / 2 = 10001 x 5000 = 50005000 For the multiples of 7 the sum is: S2 = (7 + 9996) x 1428 / 2 = 10003 x 714 = 7142142 So the sum of all integers not greater than 10000 that are not divisible by 7 is: S = S1 - S2 = 50005000 - 7142142 = 42,862,858
What is the sum of the first 5 multiples of 5?
75
What is the sum of the first 5 multiples of 6?
90
What is the sum of the first 25 multiples of 3?
975
What is the sum of the first 4 multiples of 5?
5 + 10+15+20=50 ans
