I came in doubt because of some gameshow. Can't remember which. The question was something around the lines of, "How many prime numbers between 1 and 10?"
2006-06-29 18:59:27 · 12 answers · asked by Chema 2 in Science & Mathematics ➔ Mathematics
Prime numbers are numbers that are divisible by itself and produce only two factors..
The two factors are 1 and the number itself(other than 1)...
Between 1 to 10.. There are only 4 prime numbers..
2 = 2 x 1
3 = 3 x 1
5 = 5 x 1
7 = 7 x 1
The remaining numbers are not prime numbers as they do not fit the criteria...
1 = 1 x 1
4 = 2 x 2 = 4 x 1
6 = 3 x 2 = 6 x 1
8 = 4 x 2 = 8 x 1
9 = 3 x 3 = 9 x 1
10 = 5 x 2 = 10 x 1
Hope it helps to clear your suspicions...
Cheers.... (",)
2006-06-29 19:07:26 · answer #1 · answered by Ellusive Lady 3 · 4⤊ 0⤋
There are only 4 prime numbers between 1 and 10 - which are 2, 3, 5, and 7.
By definition, a prime number is only divisible by the 2 DIFFERENT factors of 1 and itself.
As zero can be multiplied (or divided) by any real number, it is NOT a prime number by definition either.
The simplest way to remember where prime numbers start is that the very first prime number is the ONLY even prime number - which is 2.
I hope that is of some help to you.
2006-06-30 02:02:36 · answer #2 · answered by G. Rex 3 · 0⤊ 0⤋
1 is not a prime number. Primes between 1-10 are 2,3,5,7
Primes between 10-20 are 12, 13, 15, 17 see the pattern? easy to remember that way!
:)
2006-06-30 02:40:28 · answer #3 · answered by Leisa S 1 · 0⤊ 0⤋
A Prime Number is one which can only be divided by itself or "1". Therefore, yes, 1, 2 and 3 are all prime numbers.
2006-06-30 02:11:57 · answer #4 · answered by Lucinda2234 1 · 0⤊ 0⤋
2 is a prime number because the only way to get 2 is by multiplying it by one. you cant multiply any other numbers to make 2. So there for it is a prime numer. I know you think 1+1 so it could not be a prime but prime is by multiples not addition.
2006-06-30 02:13:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋
1 is not a prime number.
A prime number is a number that is divisible only by 1 and itself. In other words, a prime number only has 1 and itself as its factor.
1 is not considered as prime number as it only has itself which is 1 as a factor.
The prime numbers between 1 and 10 are 2, 3, 5, 7.
2006-06-30 02:31:42 · answer #6 · answered by whitelighter 4 · 0⤊ 0⤋
yes because u cant multiple any whole nubers other than itself and 1 to get any of those
primes between 1 and ten
1 only 1 times 1 gets u 1
2 only 1 times 2 gets u 2
3 only 1 times 3 gets u 3
5 only 1 times 5 gets u 5
7 only 1 times 7 gets u 87
2006-06-30 02:03:07 · answer #7 · answered by Obviously Bored 2 · 0⤊ 0⤋
2 is the only even prime number for obvious reasons. 1 is not consiered prime. 2,3,5,7 is correct. There are 4 prime numbers between 1 and 10.
2006-06-30 11:06:34 · answer #8 · answered by diogenese19348 6 · 0⤊ 0⤋
2 and 3 are because there only factors is 1 and theirselves
however since you can say 1 * n, whereas n is any number other than 1, 1 is not a prime.
Don't believe me, go to this site, which includes 10000 different prime numbers other than 1
www.math.utah.edu/~alfeld/math/p10000.html
2006-06-30 06:56:26 · answer #9 · answered by Sherman81 6 · 0⤊ 0⤋
a prime number is a number not divisable by anything except 1 and itself.....2 is divisable by 1 and 2 and nothing else, therefore, it is prime
2006-06-30 02:04:40 · answer #10 · answered by Anonymous · 0⤊ 0⤋