Question

If the common difference in an
in an AP is 5 then what is a18-a13​

Answer 1

Explanation:

d= 5

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Answer 2

Answer:

25

Explanation:

we know that aₙ = a + ( n - 1 ) d

n = 18

d = 5

=> a₁₈ = a + ( 18 - 1 ) 5

= a + ( 17 ) 5

= a + 85

n  = 13

d = 5

a₁₃ = a + ( 13 -  1 )5

= a + ( 12 ) 5

= a + 60

a₁₈ - a₁₃ = ( a + 85 ) - ( a + 60 )

= a + 85 - a - 60

= a - a + 85 - 60

= 85 - 60

= 25