Answer the ones you can but please answer, I need help
1. Which of the following sequences are arithmetic sequence? Give reason.
a) 3, 5, 7, 9, 11...
b) 16, 8, 4, 2, 1...
c) 25, 17.5, 10, 2.5...
d) 1, -1, 1, -1, 1...
2. Find the 10th term and nth term in the following arithmetic series:
a) 5, 8, 11, 14...
b) 24, 21, 18, 15...
c) x, 2x, 3x, 4x...
3. An arithmetic series has nth term = 3n + 3.
a) Find the 1st term and common difference.
b) Which term of the series would be 102?
4. Find the sum of the first 100 odd numbers.
5. For the arithmetic series 5, 9, 13, 17, 21 ... ... 805
a) Find the number of terms.
b) Which term of the series would be 129?
6. Given that 3rd term of the arithmetic series is 30 and the 10th term is 9. Find the first term and common difference.
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Ask one by one plz yaar.
Step-by-step explanation:
It is confusing to much.
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