Q. Find the 100 th term of the arithmetic sequence 18,31,44,…Answer:
Find Common Difference: Determine the common difference of the arithmetic sequence. The common difference d can be found by subtracting the first term from the second term. d=31−18=13
Use Formula for nth Term: Use the formula for the nth term of an arithmetic sequence.The nth term an of an arithmetic sequence can be found using the formula:an=a1+(n−1)⋅dwhere a1 is the first term and d is the common difference.
Substitute Values: Substitute the values into the formula to find the 100th term.a100=18+(100−1)×13
Perform Calculations: Perform the calculations.a100=18+(99×13)a100=18+1287a100=1305
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