Class 10th Arithmetic Progression, practice assignments-1

Arithmetic Progression (AP) 

An arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. 

For instance, the sequence 5, 7, 9, 11, 13, 15, . . . is an arithmetic progression with common difference of 2.

• Sequence: A sequence is a succession of numbers or terms formed according to some rule.
• Terms: The elements in a sequence are called Terms. A sequence is generally written as <a_n> where a_n  known as nth term of the sequence or general term of the sequence. a₁ , a ₂ , and a₃ ...  are first, second and third terms ... of the sequence.
• Finite sequence: A sequence containing finite number of terms is called a Finite sequence.
• Infinite Sequence: A sequence having unlimited number of terms is known as an Infinite sequence.