what would be the 102nd number in the following pattern 4, 13, 22, 31, 40
It is an arithmetic sequence where the common differenc is 9. (add 9 each time)
The equation for an arithmetic sequence is (any term) = (first term) + (n - 1)d (where n is the term number we want and d is the common difference.)
So we get: 102nd term = 4 + (102 - 1) 9 = 4 + 101 x 9 = 4 + 909 = 913 (the answer.)
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