Two reasons: They're often quicker to use and they make for a great filing system.
1) Speed - Suppose I had a set of objects {n1, n2, n3, n4, n5, n6, n7, n8, n9, n10, n11, n12, n13, n14, n15, n16, n17, n18} that I wanted you to add up, but I wanted you to show your work. Would you rather write this down:
n1 + n2 + n3 + n4 + n5 + n6 + n7 + n8 + n9 + n10 + n11 + n12 + n13 + n14 + n15 + n16 + n17 + n18,
or an equivalent expression, using indexes, like this:
∑(ni, i, 1, 18)?
2) Filing - Suppose I had a 6 X 6 matrix, or array, and I wanted to talk about one specific element in it. If I hadn't done the proper filing, I would be fumbling for words in an effort to describe where it is. "Go two down from the top and 3 over from the left." I'd rather just have them filed and labeled with indexes, like this n3,4.
what are the problems associated with the construction of index numbers
Here's a start umbers=[True]*5001 index=2 primes=[] while index<5000: multiplier=2 while index*multiplier <= 5000: Numbers[index*multiplier]=False multiplier+=1 index+=1 while Numbers[index]==False and index < 5000: index+=1 for x in range(0,5000): if Numbers[x]==True: primes.append(x) x+=1 print primes
Identifying array-elements.
Writing Numbers in Index FormWe know that: So, we can write 8 as 23.Likewise, 27 can be written as 33and 125 can be written as 53.So far, we have considered numbers that have a group of the same factors. Sometimes, a number has more than one group of the same factors as shown in the following example.Example 20Write 200 in simplest index form.Solution:Key Termsimplest index form
Using an API 20 E sheet.. then you use the book containing different API 7 digit numbers to identify your bacteria
When you are accessing an array's element.
disadvantages of index numbers
what are the problems associated with the construction of index numbers
merits and demerits of index number
F1194
Index numbers are statistical measures that represent the relative change in a variable or a group of variables over time. The main types include price index numbers, which track changes in the price level of a basket of goods and services (e.g., Consumer Price Index), and quantity index numbers, which measure changes in the quantity of goods produced or consumed. Other types include value index numbers, which reflect changes in the total value of goods, and composite index numbers, which combine multiple indices into a single measure for broader analysis. These indices are essential for economic analysis, inflation measurement, and policy-making.
Here's a start umbers=[True]*5001 index=2 primes=[] while index<5000: multiplier=2 while index*multiplier <= 5000: Numbers[index*multiplier]=False multiplier+=1 index+=1 while Numbers[index]==False and index < 5000: index+=1 for x in range(0,5000): if Numbers[x]==True: primes.append(x) x+=1 print primes
Index value is a phrase used to describe pairs of numbers that are arranged in a table. The purpose of this is so applications can match numbers.
Index form of 9765625 is 9.765625 × 106
what is mean by statistical approach and economical approach in the theory of index numbers?
05.08.1972
Identifying array-elements.