The sum of the numbers from 1 to 20 inclusive is 220.
The sum of all odd numbers from 1 to 64 inclusive is 4,096
There are 16 square numbers between 1 and 300: 2 to 17 inclusive. There is no square root of these numbers: only of their sum or product or average or some other operation.
Sum = ½ × number of numbers × (first number + last number) = ½ × (462 - 408 + 1) × (408 + 462) = ½ × 55 × 870 = 23,925
Answered this yesterday... Top: 3-17-7, middle 13-9-5, bottom 11-1-15
The sum of the whole numbers from 1 to 100 inclusive is 5,050.
The sum of the numbers from 1 to 20 inclusive is 220.
The sum of all odd numbers from 1 to 64 inclusive is 4,096
501
There are 16 square numbers between 1 and 300: 2 to 17 inclusive. There is no square root of these numbers: only of their sum or product or average or some other operation.
9 and 8 because if you add them you get 17 and if you subtract them you get 1
The numbers are 18 and -17 because 18-(-17) = 35 and 18+(-17) = 1
Sum = ½ × number of numbers × (first number + last number) = ½ × (462 - 408 + 1) × (408 + 462) = ½ × 55 × 870 = 23,925
The two numbers are 9 and 8
Answered this yesterday... Top: 3-17-7, middle 13-9-5, bottom 11-1-15
If you are counting the numbers 17, 18, 19, ..., 72, you will count (72 - 17) + 1 = 56 numbers (note that I added 1 because the set is inclusive, i.e. it includes 17 and 72).
To find the sum of the numbers between 43 and 87 inclusive, we need to add up all the numbers between them, including 43 and 87. There are a couple of ways to do this, but one common method is to use the formula for the sum of an arithmetic sequence: S = (n/2)(a + b) where S is the sum, n is the number of terms, a is the first term, and b is the last term. In this case, we want to find the sum of the numbers between 43 and 87, so: a = 43 b = 87 To find the number of terms, we need to count how many numbers are between 43 and 87, inclusive. There are 87 - 43 + 1 = 45 numbers. Therefore, the sum is: S = (45/2)(43 + 87) = 2025 So the sum of the numbers between 43 and 87 inclusive is 2025.