The n<sup>th</sup> term of an A.P., the sum of whose n terms is S<sub>n</sub>, is

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

The 3<sup>rd</sup> and 9<sup>th</sup> term of an arithmetic progression are -8 and 10 respective…

If the 3<sup>rd</sup> and the 5<sup>th</sup> term of an arithmetic progression are 13 and 21, wh…

Find the 15<sup>th</sup> term of the sequence 20, 15, 10 . . . . .

The next term of the A.P., $$\sqrt 7 ,$$ $$\sqrt {28} ,$$ $$\sqrt {63} ,$$ . . . . . .

Find the n<sup>th</sup> term of the following sequence :</br> 5 + 55 + 555 + . . . . T<sub>n<…

The 2<sup>nd</sup> and 6<sup>th</sup> term of an arithmetic progression are 8 and 20 respectivel…