Question

find the nth term of the sequence then find the 20th term

1. a1 = 2 and d = 3
2. -6, -4,-2....
3. a1 = 0 and d = 2/3
4. 2/5,1/18,-/15,....

please i need it badly.
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Answer 1

Answer:

please trisha give sequence of the question