Sum of n terms of 2 ap's are in the ratio 5n+4 is to 9n+6 find the ratio of there 18th terms
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sum of 18 terms of the first AP=18x5+4=94
sum of 17 terms of the first AP=17x5+4=9
sum of 17 terms of the first AP=17x5+4=9
Abhimax:
=79
18th term of first AP=5
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