Math, asked by cuteangel4790, 8 months ago

Find the 10th term from the end to beginning of the ap 4,9,14,....,254

Answers

Answered by vijayapravallikapatt
1

4,9,14,....,254 in AP

1st term a1 = 4

Common difference d = 5

Last term an = 254

an = a + (n-1) d

254 = 4 + (n-1) 5

250 = (n-1) 5

50 = n-1

50 + 1 = n

n = 51

254 is 51 term in AP series

last to 10th term in AP series is 42 term

an = a + (n-1) d

a42 = 4 + (42-1) 5

a42 = 4 + 41 × 5

a42 = 4 + 205

a42 = 209

The 10th term from the end to beginning of the AP series 4,9,14,....,254 is 209

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