Question

How many prime numbers are there between 21 and 35?

A. 3

B. 4

C. none

D. 2

Answer 1

23, 29, 31

Answer 2

A. 3

Answer 3

@genius12 >Implying that Yacoub1993 can't count.

Answer 4

prime= numbers that can only be multiplied by 1 and itself
such as (23)(1) = 23
(29)(1) = 29
(31)(1) = 31
the rest are composite numbers :)

Answer 5

thnxs guys I already figured it out :)))

Answer 6

@some_someone prime= numbers that can only be multiplied by 1 and itself
Not quite.
prime= number that can only be _divided evenly_ by 1 and itself

Answer 7

yeah, but its sort of the same concept, so its not really wrong either lol :)
but yeah urs is more precise :D

Answer 8

@some_someone
Every number can be multiplied by 1 and itself, so according to you, every number is prime. I don't think that is the definition of a prime number.

Answer 9

noooo, i said ****ONLY**** not every!!
please get ur facts straight before accusing me thanx :)

Answer 10

Ok, then name a number that can only be multiplied by 1 and itself and then name a number that cannot.

Answer 11

ok yeah 23 * 1 = 23 only could multiply by 1 and itself (23) :)
27 is composite since it can be multiplied by 27 *1 = 27 and 9 * 3 = 27

Answer 12

Ok, 23 * 1 = 23
23 * 2 = 46
23 * 3 = 69
23 * 4 = 92
23 * 5 = 115
etc.
I thought you said 23 can only be multiplied by 1 and itself, but I just multiplied it by all whole numbers from 1 to 5.

Answer 13

yes but it could only be multiplied by one to get 23!
you got just multiply like 11 * 2 = 23; its not right.