The only composite factor of 21 is 21.
-8 × (number + 21) = 96 → number + 21 = 96 ÷ -8 → number = 96 ÷ -8 - 21 = -12 - 21 = -33
21 is an odd composite number
no, 21*21=441
Who says it is? 21 is a composite number!
2 of them.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
100(21/45) = 47 %, to the justified number of significant digits, like dogs in this sample.
Nothing particular. It is a triangular number but so are infinitely many other numbers. It is a semiprime but again, so are infinitely many.
The only composite factor of 21 is 21.
-8 × (number + 21) = 96 → number + 21 = 96 ÷ -8 → number = 96 ÷ -8 - 21 = -12 - 21 = -33
21
21 is an odd composite number
no, 21*21=441
21 is a composite number
21 is a rational number.
number 21 is prime