I would generally suggest using the most significant digits in the question as a reflection of the level of detail they want. If they wanted more detail (assuming 3.14 represents the constant pi), then they would have listed pi to the significant digits necessary
100 cm = 1 m ⇒ to convert cm to m divide by 100 ⇒ move decimal point two digits to the left (inserting zeros if necessary).
Unknown
Zero; all six digit numbers have six digits. Dude.. i m asking 6 digit numbers, containing only 4 different digits..!! e.g.:123412.. with only 2 digits repeated..!! My guess is: 10*9*8*7*4*3 but I'm also guessing that is wrong- sorry!
Only three significant digits are correct, because 5.0 contains no digit for hundredths, and such a digit would be required to give four significant digits in the answer. Because 7 + 5 equals exactly 12, a third significant digit is gained for the answer. Note in contrast that the sum of 7.68 and 0.50 would properly contain four significant digits.
MTCN stands for 'money transfer control number'. This is a unique transfer number used when sending money through Western Union. The M stands for Money.
If two numbers have m and n significant digits, respectively, then then product can have at most m+n. However, the normally it is the minimum of m and n.
5
3 significant figures.The rule is that the number of digits in your answer should not exceed the lowest number of digits of all the values used to derive the answer.
12.7
I would generally suggest using the most significant digits in the question as a reflection of the level of detail they want. If they wanted more detail (assuming 3.14 represents the constant pi), then they would have listed pi to the significant digits necessary
100 cm = 1 m ⇒ to convert cm to m divide by 100 ⇒ move decimal point two digits to the left (inserting zeros if necessary).
11 Digits in a Mobil Phone Number
Unknown
Zero; all six digit numbers have six digits. Dude.. i m asking 6 digit numbers, containing only 4 different digits..!! e.g.:123412.. with only 2 digits repeated..!! My guess is: 10*9*8*7*4*3 but I'm also guessing that is wrong- sorry!
Only three significant digits are correct, because 5.0 contains no digit for hundredths, and such a digit would be required to give four significant digits in the answer. Because 7 + 5 equals exactly 12, a third significant digit is gained for the answer. Note in contrast that the sum of 7.68 and 0.50 would properly contain four significant digits.
4.0 x 10-2 * 8.1 x 102 = 32.4 2 significant digits, so the answer is 32.