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

1.	Find the 15th term from the end of the AP 3,5,7,9,....,201.
Answer» Given AP 3,5,7,9......197,199,201reversing the AP201,199,197,......9,7,5,3 First term=a=201 Common difference =d=a2-a1=199-201=215th term of AP=a+14da15=201+14(-2)=201-28=173 the required number is 173

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