Letter In The Telegraph Today.
News0 min ago
Sequences re-submission
6 Answers
Sequences
Hi,
I am tring to find the next number in the following two sets of numbers:
4.7, 11.4, 18.1 ? This is arithmetic
36, 12, 4 ? This is Geometric
Thank-you
Hi,
I am tring to find the next number in the following two sets of numbers:
4.7, 11.4, 18.1 ? This is arithmetic
36, 12, 4 ? This is Geometric
Thank-you
Answers
1 to 6 of 6
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yes, that's the 1.3333333333333333
* in an arithmetic sequence to obtain the next entry you add/subtract a fixed amount to current entry, in this case add 6.4
* in a geometric sequence you multiply/divide the current entry by a fixed amount to get the next one, in this case divide by 3
(subtraction is the same as addition but using a negative number, and similarly division is equivalent to multiplication)
* in an arithmetic sequence to obtain the next entry you add/subtract a fixed amount to current entry, in this case add 6.4
* in a geometric sequence you multiply/divide the current entry by a fixed amount to get the next one, in this case divide by 3
(subtraction is the same as addition but using a negative number, and similarly division is equivalent to multiplication)
1 to 6 of 6
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