Question

Find the common difference of the A.P. 3,10,17.........​

Answer 1

a1=3

a2=10

d=a2-a1

d=10-3

d=7

Answer 2

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$common \: difference = 10 - 3 = 7 \\ \: \: \: \: \: \: \: or \\ 17 - 10 = 7 \\ common \: difference = 7$

hope it will help you