How many whole numbers between 1 and 100 are equal to 6 times a number?
回答 (4)
2016-06-21 2:08 pm
you should be able to figure than out in less than 60 seconds starting with the number 6
2016-06-21 2:09 pm
roughly 1/6 of them
2016-06-21 2:14 pm
The numbers are 6, 12, 18, ......, 96
The numbers form an arithmetic sequence, where
the common difference, d = 6
the first term, T(1) = a = 6
the last term, T(n) = a + (n - 1)d = 96
a + (n - 1)d = 96
6 + (n - 1)6 = 96
6 + 6n - 6 = 96
6n = 96
n = 16
Number of whole numbers between 1 and 100 are equal to 6 times a number = 16
The numbers form an arithmetic sequence, where
the common difference, d = 6
the first term, T(1) = a = 6
the last term, T(n) = a + (n - 1)d = 96
a + (n - 1)d = 96
6 + (n - 1)6 = 96
6 + 6n - 6 = 96
6n = 96
n = 16
Number of whole numbers between 1 and 100 are equal to 6 times a number = 16
2016-06-21 2:08 pm
16.
收錄日期: 2021-04-18 15:14:52
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