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If the 1st term of an arithmetic progression is 4 and the common difference is 3, what is the sum of the first 10 terms?

Practice Questions

1 question
Q1
If the 1st term of an arithmetic progression is 4 and the common difference is 3, what is the sum of the first 10 terms?
  1. 70
  2. 80
  3. 90
  4. 100

Questions & Step-by-step Solutions

1 item
Q
Q: If the 1st term of an arithmetic progression is 4 and the common difference is 3, what is the sum of the first 10 terms?
Solution: The sum of the first n terms S_n = n/2 * (2a + (n-1)d). Here, S_10 = 10/2 * (2*4 + 9*3) = 5 * (8 + 27) = 5 * 35 = 175.
Steps: 0

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