Math, asked by pallavijeevu24p39p2d, 1 year ago

want know the solution of this in an easy method

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Answered by parasarora77
1
Here, a= -3
And d= -4
So 30th term of AP is given by
a30= a+(30-1)d
= -3+(29)(-4)
= -3 - 116= -119
and 20th term of AP is given by
a20= -3 - (19)(4)
a20= -3 -76 = -79
So a30 - a20
= -119 - (-79)
= -119 + 79
= -40

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