Engineering Board Exam Reviewer · Sequences and Series · easy
In a certain arithmetic progression, the twentieth term is 32 and the common difference is 3. Find the 3rd term.
- 19
- -19
- -22
- 16
Answer
B. -19
Solution
a20 = a1+19d = 32 with d=3 gives a1 = -25. The 3rd term = a1+2d = -25+6 = -19.
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