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Find the 15th term from the end of the AP 3,5,7,9,....,201.

Posted by Lucifer?? Morningstar?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Mahi..... ♾ 5 years, 5 months ago

Given AP 3,5,7,9......197,199,201 reversing the AP 201,199,197,......9,7,5,3 First term=a=201 Common difference =d=a2-a1=199-201=2 15th term of AP=a+14d a15=201+14(-2) =201-28=173 the required number is 173

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