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  • The common difference of an AP, whose nth term is an = (3n + 7), is  Option: 1 3 Option: 2 7 Option: 3 10 Option: 4 6

The common difference of an AP, whose nth term is an = (3n + 7), is 
Option: 1 3
Option: 2 7
Option: 3 10
Option: 4 6

Answers (1)

\\a_n=a+(n-1)d=a-d+nd\\given\ a-d+nd=3n+7\\implies\ d=3\ and \ a-d=7

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