Question

find the 50th term and sum of first 50 terms of the arithmetic 11,16,21,26 ____________

Answer 1

Answer:

Therefore, the sum of the first 50 terms is 6675.

Answer 2

Answer:

Given: An arithmetic progression.

To find: The 50th term and the sum of the first 50 terms.

Answer:

AP - 11, 16, 21, 26, ...

From this progression,

  : The first term (a) = 11.

  : The common difference (d) = 16 - 11 = 5.

Let's find the 50th term.

$a_{50}$ = a + 49 × d

$a_{50}$ = 11 + 49  × 5

$a_{50}$ = 11 + 245

$a_{50}$ = 256

Therefore, the 50th term is 256.