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In the first step both numbers were divided by 10, which is a factor common to both 120 and 90. In the second step, they were divided by 3. The final result, 4 / 3 , is an irreducible fraction because 4 and 3 have no common factors other than 1.
Simplification is the process of replacing a mathematical expression by an equivalent one that is simpler (usually shorter), according to a well-founded ordering. Examples include:
Percentages greater than 100 or less than zero are treated in the same way, e.g. 311% means 311 ⁄ 100 and −27% means −27 ⁄ 100. The related concept of permille , or parts per thousand (ppt), means a denominator of 1000, and this parts-per notation is commonly used with larger denominators, such as million and billion , e.g. 75 parts per ...
The average rate on a 30-year mortgage in the U.S. eased for the second week in a row, but remains just below 7%, little relief for prospective home shoppers looking ahead to the spring homebuying ...
Name First elements Short description OEIS Mersenne prime exponents : 2, 3, 5, 7, 13, 17, 19, 31, 61, 89, ... Primes p such that 2 p − 1 is prime.: A000043 ...
It has an aliquot sum of 42; within an aliquot sequence of thirteen composite numbers (30, 42, 54, 66, 78, 90, 144, 259, 45, 33, 15, 9, 4, 3, 1, 0) to the Prime in the 3-aliquot tree. From 1 to the number 30, this is the longest Aliquot Sequence. It is also: A semiperfect number, since adding some subsets of its divisors (e.g., 5, 10 and 15 ...
#33. Image credits: cats doing cat stuff #34. Image credits: ... These 4-ingredient cookies take 30 minutes to make. Food. Fox News. 4 Valentine's Day candy options free of dyes and chemicals.
33 is the 21st composite number, and 8th distinct semiprime (third of the form where is a higher prime). [1] It is one of two numbers to have an aliquot sum of 15 = 3 × 5 — the other being the square of 4 — and part of the aliquot sequence of 9 = 3 2 in the aliquot tree (33, 15, 9, 4, 3, 2, 1).