Which of the following sequences are A.P.? If they are A.P. find the common difference.
2, 4, 6, 8, ....
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ANSWER:
2,4,6,8
a=2
d= t2-t1
=4-2
=2
d2=t3-t2
=t3-t2
=6-4
=2
d3=t4-t3
=8-6
=2
It is in the form of AP
Common Difference (d) =2
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