Tags
Prime Numbers
Subjects
Animals & Plants
Arts & Entertainment
Auto
Beauty & Health
Books and Literature
Business
Electronics
Engineering & Technology
Food & Drink
History
Hobbies
Jobs & Education
Law & Government
Math
People & Society
Science
Social Studies
Sports
Travel & Places
Create
0
Log in
Subjects
>
Math
>
Basic Math
Which number is a prime number a.91 b.51 c.31 d. 21?
Anonymous
∙
15y ago
Updated: 4/28/2022
91 = 13*7
51 = 17*3
21 = 3*7
31 is prime. â–
Wiki User
∙
15y ago
Copy
Still curious? Ask our experts.
Chat with our AI personalities
Lao
The path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
Ezra
Faith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra
Devin
I've poured enough drinks to know that people don't always want advice—they just want to talk.
Chat with Devin
Show More Bots
Add your answer:
Earn +20 pts
Q: Which number is a prime number a.91 b.51 c.31 d. 21?
Write your answer...
Submit
Still have questions?
Find more answers
Ask your question
Continue Learning about Basic Math
Trending Questions
How do you write 0.051 as a percentage?
What is 4 tenths less than 2.778?
What are multiples and factors?
How do you factor 24am-9an plus 40bm-15bn?
How do you make a mixed number into a improper fraction?
Factor strings for the number twelve?
When 70 percent of a number is added to the number the result is 68 what number is it?
How do you write 15.062 in word form?
What is 0.0833333333333 as a fraction?
How do you put 32005008 in word form?
What is the decimal equivalent to 4?
What is the value of the number 3 in the number 356?
What number is halfway between 8.80 and 8.81?
What is 8.88888889 as a fraction?
What is the Greatest common factor of 16 48 and 52?
Are 105 and 128 relatively prime numbers?
Can i use because twice in the same sentence?
How do you work out 15 percent of 360?
What is the LCM for 65 100 and 150?
How do you calculate the LCM of 1.5 and 5?