Kyriejr30
Kyriejr30 Kyriejr30
  • 16-01-2018
  • Mathematics
contestada

which of these is a prime number 1,11,21,51 ?

Respuesta :

shaniam05
shaniam05 shaniam05
  • 16-01-2018
11,,21,51 are all  prime numbers
Answer Link
mathstudent55
mathstudent55 mathstudent55
  • 16-01-2018
A prime number has exactly 2 different factors, 1 and itself.

11 is divisible only by 1 and 11.
11 is prime.

21 and 51 have a least three factors. They are not prime.
1 has only 1 factor. 1 is not prime.
Answer Link

Otras preguntas

Referring to nations and cultures that have ties to Spain and Portugal. Group of answer choices Iberian Soviet Union Globalization
branches of sicence​
What can you say about an atom with 4 protons, 2 neutrons, and 5 electrons?
The difference between the image provided by each eye is called a) color blindness b) blind spot c) adaptation d) binocular disparity
What impacts do you see currently, or believe that you will see, in your own community as a result of globalization, outsourcing, and technological innovation?
HELP ME! I SUCK. I DON UNDERSTAND
What is the probability that a normal random variable will take a value that is less than 1.05 standard deviations above its mean?
Which detail is most important for the characters' journey
I need a republican. Plz give me a reason on why your on your side
What kind of line can be drawn through the points (2, 3) and (-2, 3)?