Question

one more question from
chapter 5
Arithmetic progression
class 10


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Answer 1

Answer:

Here it is given that d=5

a18 - a13

=a+17d - ( a + 12d)

= a + 17d - a - 12d

= 17d- 12d

substituting 'd' by 5

= (17 ×5) -(12 ×5)

=85-60

= 25

Therefore a18 - a13 = 25

Answer 2

Answer:

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