1.

98 is a term of the arithmetic sequence having common difference 7. is 2016 a term of this sequence. Why?

Answer»

If (2016 – 98) is a multiple of common difference 7, 

then 2016 is a term of the arithmetic sequence. 

2016 – 98 = 1918 

1918 is a multiple of 7. 

(Quotient = 274, Remainder = 0) 

∴ 2016 is a term of this sequence.



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