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What is between 20 and negative 15?
lots of numbers.. it depends on if you want integers or real numbers. So for example, 0 and -2 and 5 are between 20 and -15, but so is Pi, and the square root of 2 and an infinite number of numbers If we just limit the answer to integers, then we have -14, -13, -12,-12......0, 1, 2, 3,4,....19. Sometimes we include the endpoints, -15 and 20, but usually we are told to do that Mathdoc Doctor Chuck
What are near perfect numbers?
They are numbers that are NEAR PERFECT. a near perfect number is when its factors (exept the actual number) are added up and ALMOST equal the number ex. 16x1/2x8/4x4/ so its factors are 1,2,4,8 and 16 so add them ( exept the actual number) 1+2+4+8=15 so its NEAR PERFECT and a perfect number is a number that all its factors equal to its number ex. 6-1,2,3,6 are its factors all together-1+2+3=6 those are NEAR PERFECT and PERFECT numbers
What are non-perfect square numbers?
Non-perfect square numbers are numbers that are not formed from the square of a number. 12, 13, 14, 21, 99, etc, are all non-perfect square numbers because when you square root them you do not get a whole number, which means they are not formed by any whole number, x, being squared (x^2).
What are the first 20 triangle numbers?
Calculate n*(n+1)/2 for n=1, 2, 3, ... , 20.
What are the whole numbers between 1 and 20?
Oh, what a happy little question! The whole numbers between 1 and 20 are 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19. Each number is unique and special, just like every tree in our painting. Just remember to paint them with love and kindness.
How many numbers between 2 and 20 are perfect squares?
Three numbers.
How many numbers between 10 and 20 are perfect squares?
Only one - 16
What are 2 almost perfect numbers between 5 and 20?
Perfect numbers are numbers where all the factors add to that number. For example 6's factors are 1,2, and 3 and 1+2+3=6. Therefore the next perfect number isn't until 28 which is 1,2, 4, 7, 14 where 1+2+4+7+14= 28 An almost perfect number is a number which, when adding all of its proper divisors (all divisors except himself), gives you one less, or one more then the number itlself. Up to now all known almost perfect numbers are 2^n. So to answer your question, the 2 almost perfect numbers between 5 and 20 are 8 and 16. Divisors of 8: 1,2,4 -----> 1+2+4=7 Divisors of 16: 1,2,4,8 -----> 1+2+4+8=15
What is the difference between the two odd numbers right after 20?
The difference is 2. (23 - 21 = 2).If we are talking about two odd numbers that come right after the number 20 then we mean the two consecutive odd numbers after 20.The difference between any consecutive odd numbers (or between any consecutive even numbers) is always 2.
Which of the numbers between 2 and 20 are not rectangular numbers?
The prime numbers and the squares of primes between 2 and 20: 3, 4, 5, 7, 9, 11, 13, 17 and 19.
Set of odds numbers divisible by 5 between 10 and 20?
set of odd numbers divisible by 2 between 10 and 20
How many numbers between 20 and 50 end 2 or 5?
six numbers
What numbers is halfway between 20 and 30?
25
How many prime numbers between 1 and 20?
There are 8 prime numbers between 1 and 20. The numbers are 2, 3, 5, 7, 11, 13, 17, and 19.
What are the prime numbers between 0 and 20?
The prime numbers between 0 and 20 are: 2, 3, 5, 7, 11, 13, 17 and 19
What are all the perfect numbers 1 - 300?
-299
What numbers between 1 and 20 are factors of 20?
1, 2, 4, 5, 10, 20
