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A10=25
A18=41
ATQ
a+9d=25---------------------(2)
a+17d=41-------------------(1)
Subtract (2) from (1)
a+17d-a-9d=41-25
8d=16
d=2
Putting value of d in eq-(1)
a+9(2)=25
a=25-18
a=7
A38=a+37d
7+37(2)
7+74
81=A38
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vedant7884:
your answer is wrong
Ok
Sorry
But how is it wrong
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