Question

find the value and answer this question ​

Answer 1

Answer:

25

Step-by-step explanation:

common difference of the Arthemetic progression is 5

18th term of AP = a+(n-1 )d

= a+(18-1)5

= a+85.

13th term of AP= a+(13-1)5

= a+ 60

18th term - 15 th term

= a+85-(a+60)

a-a+85-60

= 25

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Answer 2

Answer:

25

Step-by-step explanation:

common difference= 5

a18-a13

a+17d-(a+12d)

a+ 17*5-(a+12*5)

a+85-a-69

25