1.

find 12th term of ap -3,-1/2,2

Answer»

a = -3

d = -1/2-(-3)

= 3-1/2

= 5/2

12th term = a + 11d

= -3 + 11(5/2)

= -3 + 55/2

= -6+55/2

= 49/2

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