Question

If the common difference of a AP is 3 then find the value of a17- a12 is

Answer 1

Answer:

81

Step-by-step explanation:

d = 3

an = a + (n - 1)d

=> a17 = a + (17 - 1)3 = a + 48

&, a12 = a + (12 - 1)3 = a + 33

As per question;  

 a + 48

- a + 33

=   81

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