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Without just going and doing the addition, you can use this formula:
Sum of 1 to N is: (N+1)*N/2. So take sum of [1 to 100], then subtract off the sum of [1 to 20], and you'll have left the sum [21 to 100].
Sum [1-100] = (100+1)*100/2 = 5050. Sum[1-20] = (20+1)*20/2 = 210.
So 5050 - 210 = 4840
What else can I help you with?
What is the sum of the six smallest counting numbers?
21
What is the sum of the first 21 square numbers?
100
What is the sum of the numbers on a standard die?
The total is 21.
What are Sum of 3 consecutive numbers in 66?
The numbers are 21, 22 and 23.
Three consecutive numbers have a sum of 66?
The numbers are 21, 22 and 23.
The sum of two consecutive odd numbers is 21 What are the two numbers?
There are none.
What are the numbers if the difference of two numbers is 16 Their sum is 26?
5 & 21
What are the two consecutive numbers whose sum is 41?
The numbers are 20 and 21.
What is the sum of the first six positive numbers?
The sum of the first six positive numbers (1 to 6) is 21.
What sum of two numbers is 58 and their difference is 16 find the numbers?
37 + 21 = 5837 - 21 = 16The two numbers therefore are 37 and 21.
What is the sum of the odd numbers between 20 and 26?
The odd numbers between 20 and 26 are 21, 23, and 25. To find the sum, add these numbers together: 21 + 23 + 25 = 69. Therefore, the sum of the odd numbers between 20 and 26 is 69.
Two numbers have a sum of 47 their difference is 5 what are the two numbers?
The numbers are 26 and 21
