Think of the "ex" in index as meaning exponent. Write the prime factorization with exponents. 216 = 23 x 33
27 x 32 = 1152
52 = 25
U.S. goes by Cetane Number of 40 whereas EU follows a Cetane Index of 46 plus a Cetane Number of 51. Other countries either specify Cetane Number or Cetane index, some of them specify both. Cetane Number can be improved by adding chemical additives , the Cetane Index cannot be influenced since its a quality of base fuel.
The misery index is an index that tries to measure overall happiness in economic terms. It adds the unemploymnet rate to the inflation rate. The higher the number the greater the misery.
1.016 *100 but the "*100" bit is really redundant.
No. In the index form a number is expressed as a multiple of its prime factors whereas in the standard form it is expressed as a number between in the range [1, 10) multiplied by an integer power of 10. So, for example, 1728 in index form = 26*33 1728 in standard form = 1.728*103 The index form can only be used for integers.
"index" is the singular form - "indices" is the plural :)
If the number can be written as 2*3*5 it cannot be prime!
what is index number
The possessive form of the singular noun index is index's.
uses of index
indices or indexes
The plural form for the noun index is indexes.
The number 3600 in standard index form is expressed as (3.6 \times 10^3). This representation indicates that 3.6 is multiplied by 10 raised to the power of 3, which equals 3600.
Index form of 9765625 is 9.765625 × 106
40.000000 in standard index form is 4.0 × 101
5,200 in standard index form = 5.2 × 103