1 and 100 make a pair that add to 101
2 and 99 make a pair that add to 101
3 and 98 make a pair that add to 101
etc
50 and 51 make a pair that add to 101
So you have 50 pairs that add to 101
So the total sum is 50*101 or 5050.
50.5
The average is the sum of those 100 numbers divided by 100.
16
All you do is add all of the numbers 3 times and 1 an 9 4 times
If the question is about all NUMBERS, then the answer is infinite. If the question is about all integers, the answer is 5050.
50.5
Out of the first 100 whole numbers, the ones that are divisible by 4 are 4, 8, 12, 16, 20 and just keep adding four until you get to one hundred.
Adding: 100+44 Multiplying: 12*12
The first 100 odd whole numbers are: 13579111315171921232527293133353739414345474951535557596163656769717375777981838587899193959799101103105107109111113115117119121123125127129131133135137139141143145147149151153155157159161163165167169171173175177179181183185187189191193195197199.
The first 100 even numbers are: 2 468101214161820222426283032343638404244464850525456586062646668707274767880828486889092949698100102104106108110112114116118120122124126128130132134136138140142144146148150152154156158160162164166168170172174176178180182184186188190192194196198200.
The first 100 whole, even numbers are: 2468101214161820222426283032343638404244464850525456586062646668707274767880828486889092949698100102104106108110112114116118120122124126128130132134136138140142144146148150152154156158160162164166168170172174176178180182184186188190192194196198200.
Well, isn't that just a happy little question! When you add 100 plus 100 together, you get 200. It's like adding two friendly little numbers that come together to create something beautiful. Just imagine those numbers dancing together on your canvas, creating a perfect sum of 200.
Adding up all the even numbers from the first (2) to the fiftieth (100): [(100 + 2) / 2] x 50 = 2550 Can you see the logic of this method?
The sum of the first 100 numbers, excluding zero, is 5,001.
To find the sum of the first 100 integers, you first add 1 plus 100 (the first and last numbers of the set) and get 101. Do the same with the next two integers, 2 and 99 and you'll get 101. Since you are adding two integers at a time and there are 100 integers between 1 and 100, you'll get 101, fifty times. Therefore, a shortcut would be to simply multiply 101 times 50 and get 5,050.
The average is the sum of those 100 numbers divided by 100.
The sum of the first 100 odd numbers is 10,000.