Question

8.3
2 marks each
(March
Find the 19th term of the A.P. 7. 13. 19. 25.​

Answer 1

Explanation:

$a = 7 \\ d = 13 - 7 = 6 \\ n = 19 \\ using \: formula \: \\ \huge a \small{n} \: = a + (n - 1)d \\ putting \: the \: values \: we \: get \: \\ \huge \: a \small{n} = 7 + (19 - 1)6 \\ = 7 + 18 \times 6 \\ = 7 + 108 \\ = 115 \\ \\ so \: the \: 24th \: term \: of \: this \: \: {ap} \: is \: 115$

So, the 24th term of this AP is 115.

Answer 2

Find the 19th term of the A.P. 7. 13. 19. 25.

Answer:

Your answer is 115