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there are an infinite amount of square numbers 4,9,16,25,36,49,64,81,100... A square number is a number multiplied by its self. For example 6 times 6 is 36 so 36 is a square number
To Help just add the odd 2 times tables to get each square number.
For example: 1=1
1+3=4
1+3+5= 9
1+3+5+7-= 16
1+3+5+7+9= 15
11 12 13 14 15 16 17 18 19 20
carrying on from 100... 121,144,169,196,225, 256, 289, 324, 361, 400!
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How many square numbers from 1-1000?
1001
What is the greatest prime you must consider to test whether 5669 is prime?
you would need to look at all numbers up to square root of n, which in this case is 75.
How do you round up 800000 to nearest 100000?
100000 divides equally into 800000, so there is no rounding required.
How do you test if a Number is Prime?
There is no easy test. You need to divide the number by all the primes up to the square root of the number, so if you want to know if 56789 is prime, you need to divide by all the prime numbers up to 239. If you go through all the primes up to the square root and don't get an even number as the result of the division then the number is prime. (Incidentally, the factors of 56789 are 109 and 521.)
What pair of square numbers gives a total of 2000?
Well, honey, let me break it down for you. The square root of 2000 is around 44.72, so the closest pair of square numbers that add up to 2000 are 44^2 and 45^2. In other words, 1936 + 2025 = 3961, not 2000. So, there ain't no pair of square numbers that add up to 2000.
