1.

If 6th term of an AP. Is -10 and it's 10 term is -26,then find first term and difference

Answer» T6=a+5d=-10......(1)

T10=a+9d=-26....(2) where a is the 1st term and d is the common difference.

Subtracting (1) from (2)

4d=-16

=>d,= -4

So a+5×4=-10

=>a = -30


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