which number is a composite?
A 41
B. 81
C. 31
D. 47
PLZ HELP!!!!!!!
41 is
THANK YOU!!!!!!
no.
41 is prime
So what is it
its 81
To determine which number is a composite among the options A, B, C, and D, we need to understand what composite numbers are. Composite numbers are positive integers that have more than two factors, meaning they have factors other than 1 and themselves.
Let's go through each option and identify if it is a composite number:
A. The number 41: Since 41 is only divisible by 1 and 41 itself, and it does not have any other factors, it is not a composite number.
B. The number 81: To check if 81 is a composite number, let's find its factors. We can try dividing it by numbers less than 81. In this case, we find that 81 is divisible by 3 (81 รท 3 = 27). Since it has factors other than 1 and itself (3 and 27), 81 is a composite number.
C. The number 31: Similar to option A, we need to check if 31 has any factors other than 1 and 31 itself. After examining the numbers less than 31, we find that it is only divisible by 1 and 31. Therefore, 31 is not a composite number.
D. The number 47: Like options A and C, we check if 47 has any factors besides 1 and 47. However, after testing numbers less than 47, we find that it is only divisible by 1 and 47 itself. Thus, 47 is not a composite number.
Based on our analysis, the only composite number among the given options is 81 (option B).