Is 121 composite number,why
No, 121 is not a composite number. A composite number is a positive integer greater than 1 that has multiple positive divisors other than 1 and itself. 121 can only be divided evenly by 1 and 121 itself, so it is not composite. It is actually a perfect square, equal to 11^2.
No, 121 is not a composite number. A composite number is a positive integer greater than 1 that has factors other than 1 and itself. In the case of 121, its only factors are 1 and 121 itself. Therefore, it is considered a prime number.
To determine if 121 is a composite number, we need to understand what a composite number is.
A composite number is a positive integer greater than 1 that has factors other than 1 and itself.
To check if 121 is composite, we need to find its factors. We can do this by dividing 121 by all the numbers from 2 to the square root of 121, which is approximately 11.
If we divide 121 by any number from 2 to 11 and get an exact quotient, then 121 would be composite. However, if we find that 121 is only divisible by 1 and itself, then it would be a prime number.
Let's go through the calculations:
121 ÷ 2 = 60.5 (not an exact quotient)
121 ÷ 3 = 40.33 (not an exact quotient)
121 ÷ 4 = 30.25 (not an exact quotient)
121 ÷ 5 = 24.2 (not an exact quotient)
121 ÷ 6 = 20.17 (not an exact quotient)
121 ÷ 7 = 17.29 (not an exact quotient)
121 ÷ 8 = 15.13 (not an exact quotient)
121 ÷ 9 = 13.44 (not an exact quotient)
121 ÷ 10 = 12.1 (not an exact quotient)
121 ÷ 11 = 11 (exact quotient)
Since 121 is divisible by 11 and produces an exact quotient, it means that there is at least one factor other than 1 and itself. Therefore, 121 is a composite number.