Q. Find the 55th term of the arithmetic sequence 11,30,49,…Answer:
Arithmetic Sequence Formula: To find the 55th 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)d, where an is the nth term, a1 is the first term, n is the term number, and d is the common difference between the terms.
Determine Common Difference: First, we need to determine the common difference d of the sequence. We can do this by subtracting the first term from the second term: d=30−11=19.
Plug in Values: Now that we have the common difference, we can use the formula to find the 55th term. Let's plug in the values: a1=11 (the first term), n=55 (since we're looking for the 55th term), and d=19 (the common difference we found).
Calculate 55th Term: Using the formula: a55=11+(55−1)×19.
Perform Calculation: Now, let's do the calculation: a55=11+54×19.
Final Result: Multiplying 54 by 19 gives us 1026. So, a55=11+1026.
Final Result: Multiplying 54 by 19 gives us 1026. So, a55=11+1026. Adding 11 to 1026, we get a55=1037.
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