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After 1 and 9, 225 is the third smallest number n for which σ(φ(n)) = φ(σ(n)), where σ is the sum of divisors function and φ is Euler's totient function. [8] 225 is a refactorable number. [9] 225 is the smallest square number to have one of every digit in some number base (225 is 3201 in base 4) [10] 225 is the first odd number with ...
"2 + 2 = 5" is a song by the English rock band Radiohead. It is the opening track to their sixth studio album, Hail to the Thief (2003), and was released as the album's third and final single. It reached number two on the Canadian Singles Chart , number 12 on the Italian Singles Chart , and number 15 on the UK Singles Chart .
3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1. Means "less than or equal to". That is, whatever A and B are, A ≤ B is equivalent to A < B or A = B. 2. Between two groups, may mean that the first one is a subgroup of the second one. ≥ 1. Means "greater than or equal to".
This is a list of songs by their Roud Folk Song Index number; the full catalogue can also be found on the Vaughan Williams Memorial Library website. Some publishers have added Roud numbers to books and liner notes, as has also been done with Child Ballad numbers and Laws numbers.
1- or 2-digit/letter combination: Speed rating; see table below. Additional marks: see subheading below. As an example, if a tire size has two sets of numbers (6-12, 5.00-15, 11.2-24), then the first number (5.00-15) is the approximate width in inches, and the second number (5.00-15) is the rim diameter in inches.
A chart of accounts (COA) is a list of financial accounts and reference numbers, grouped into categories, such as assets, liabilities, equity, revenue and expenses, and used for recording transactions in the organization's general ledger.
Some have alleged that departures in normality in the process output significantly reduce the effectiveness of the charts to the point where it may require control limits to be set based on percentiles of the empirically-determined distribution of the process output [2]: 237 although this assertion has been consistently refuted. See Footnote 6.
The 225 used the RG (tall) block with a 3 + 2 ⁄ 5 in (86.4 mm) bore, a 4 + 1 ⁄ 8 in (104.8 mm) stroke and 6.699 in (170.2 mm) connecting rods, for an actual displacement of 224.7 cu in (3.7 L). This undersquare geometry was a departure from the emerging trend towards oversquare engines.