Question

Find the12th term of an AP : -2,-4,-6......-100

Answer 1

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Answer 2

-2,-4,-6.........,-100
a = a₁ = -2
a₂ = -4
Common difference,d = a₂ - a₁
= -4 - (-2)
= -4 + 2
d = -2
nth term of AP : an = a + (n-1)d
a₁₂ = -2 + (12-1)(-2)
= -2 + (11)(-2)
= -2 - 22
= -24

Therefore, 12th term of AP is -24