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Answer:
The 81st term of arithmetic sequence is -1016
Step-by-step explanation:
Formula for arithmetic sequence is given by,
Where,
Therefore value of n is n = 81.
Common difference is calculated by subtracting second term from first term as follows,
Therefore for first two terms that is 24 and 11 common difference is,
Therefore for next two terms that is 11 and -2 common difference is,
Hence common difference is
Substituting the value,
Simplifying,
Therefore, the 81st term of the arithmetic sequence 24, 11, -2, ... is -1016
