3.
250 million = 250,000,000. There are 9 digits in this number.
1128
25 buhgillion
453 0-9 9 digits 10-99 180 digits 100-250 453 digits
9 digits used for pages 1 to 9 (9 pages * 1 digit)180 digits used for pages 10 to 99 (90 pages * 2 digits)453 digits used for pages 100 to 250 (151 pages * 3 digits)Total = 9 + 180 + 453 = 642 digits used.(Of course a trick answer is 10 as there are only 10 possible different digits in decimal).
642
There are 2.54 cm per inch and 12 inches per foot. Therefore, there are 30.48 cm/foot, and 250 cm = 250/30.48 = 8.20 feet, to the justified number of significant digits.
1) Look at the two numbers you are multiplying 2) Find both their number of significant digits 3) Multiply both numbers together normally 4) Round your answer to the same number of significant digits of the least number in the first two factors 250 x 185 250 had 2 sig. digits------ 185 has 3 sig. digits 250 has the least number of sig. digits (2) Final answer has to have 2 sig. digits Normal answer: 46250 With rounding of sig. digits: 46000
6 digits
6
12 digits.12 digits.12 digits.12 digits.
A quadrillion has 16 digits.