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Q: What is the sum of the first 30 positive even numbers combined?

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The sum of the first 100 positive even numbers is 10,100.

The sum of the first 100 positive even numbers is 10,100.

The sum of the first 30 positive even numbers is 930.

the first positive even numbers are 2,4,6,8,10

The sum of the first 30 positive even numbers is 930.

There is no conjecture about the sum of the first 30 positive even numbers. The answer can be derived and proven. A statement that has been proven is no longer a conjecture.

10,100

twenty

The sum of the first 1,000,000 positive even numbers is: 2 + 4 + 6 + 8 + ... + 2,000,000 The sum of the first 1,000,000 positive odd integers is: 1 + 3 + 5 + 7 + ... + 1,999,999 The difference between the two is: (2-1) + (4-3) + (6-5) + (8-7) + ... + (2,000,000-1,999,999). This is the same as: 1 + 1 + 1 + 1 + ... + 1. Well how many 1's are there? 1,000,000. So the difference is 1,000,000. Note that if the question asked for the difference between the sum of the first 1,000 positive even numbers and the sum of the first 1,000 positive odd numbers, the answer would be 1,000. The first n even numbers and odd numbers? n.

The sum of the first 15 positive even numbers is 240. (Simply square 15, then add 15 to the result: 15 x 15 = 225. 225 + 15 = 240).

The sum of the first three even positive integers is 2 + 4 + 6 = 12.

The first 10 positive whole numbers are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.The even numbers among those are 2, 4, 6, 8, 10.So there are 5 ways of choosing an even number from among the first 10 positive whole numbers.

4,000 even numbers, 4,000 odd numbers.

even numbers are exactly divisible by two. ie. they do not give a remainder when divided by 2. natural numbers are positive integers starting from 1. even natural numbers are a combination of both.. eg. 2,4,50 etc the term positive is not required for these numbers because, natural numbers are positive !... so positive 'natural number' is like saying ' approximated estimate '..

2 + 4 + 6 + 8 + 10 = 30 In general, the sum of the first n even numbers is n(n+1). Replacing n with 5 we have 5x6 which equals 30 as we found by direct calcuation. The formula is nice when you have many numbers. For example, finding the sum of the first 100 positive even numbers would be a PAIN! But using the formula is it simply 100x101.

-998 = if its negative number 100 = if its positive numbers

Any 2 negative numbers, whether even or odd, when multiplied are positive

No - although all positive even numbers other than 2 are composite, this does not mean that all composite numbers are even - the first odd composite number is 9, which is equal to 3 x 3.

Negative times negative equals positive. Positive times positive equals positive. Positive times negative equals negative. If you have more than two numbers, multiply the first two and then apply these rules to each successive number in turn.

2 + 4 + 6 + 8 + 10 + 12 = 42

You do not need a conjecture; you can calculate the answer. The answer is 10,100

The sum of the first n positive integers (i.e. 1+2+3+...+n) is given by n(n+1)/2 so the sum of the first 25 positive integers is 1+2+3+...+25 = 25x26/2 = 325. The sum of the first 25 EVEN numbers will be double this i.e. 2+4+6+...+50 = 650.

The positive even numbers are: 2 4 6 8 and 10

It is positive. Any product of an even number of negative numbers will be positive, regardless of how many positive numbers you have. Similarly any product of an odd number of negative numbers will be negative, regardless of how many positive numbers you have.

All numbers are used in all known languages, just spelt differntly, so no-one knows,sorry