The sum of first 17 terms of an AP is 24 and the sum of first24 terms is 17 .find the sum of first 41 terms..
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Answer: -1
Step-by-step explanation:a+16d=24.......(1)
a+23d=17.......(2)
Subtracting 2 from 1
-7d=7
d=-1
a-23=17
a=40
Sum of 41 terms = a+(41-1)*d= 40+(40*-1)=-1
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