Answers

2014-11-17T22:38:33+05:30
Comman  diff is given by T2 -T1

P+1+Q(P+1)+Q+1 - (P+Q)
1+ QP +Q+1
2+ Q(P+1)
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2014-11-18T11:42:52+05:30
Common difference is the difference between two consecutive terms
i.e,., t_2 - t_1

P + 1 + Q(P+1) - (P+Q)
⇒ P + 1 + PQ + Q - P - Q
⇒ 1 + PQ



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