Q. Find the 71 st term of the arithmetic sequence 1,17,33,…Answer:
Arithmetic Sequence Formula: To find the 71st term of an arithmetic sequence, we need to use the formula for the nth term of an arithmetic sequence, which is:an=a1+(n−1)dwhere an is the nth term, a1 is the first term, n is the term number, and d is the common difference between the terms.
Identify First Term: First, we identify the first term a1 of the sequence, which is given as 1.
Find Common Difference: Next, we need to find the common difference d. We can do this by subtracting the first term from the second term: d=17−1=16
Calculate 71st Term: Now that we have the first term and the common difference, we can find the 71st term a71 using the formula:a71=a1+(71−1)d
Substitute Values: Substitute the known values into the formula: a71=1+(71−1)×16
Perform Calculation: Perform the calculation inside the parentheses first: a71=1+(70×16)
Multiply Values: Now, multiply 70 by 16: a71=1+1120
Add to Find 71st Term: Finally, add 1 to 1120 to find the 71st term:a71=1121
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