Arithmetic Progressions

Question 1

Arithmetic progressions are actually like

Answer 1

Patterns that contain terms

Question 2

The first term of an arithmetic progression is denoted by

Answer 2

“a”

Question 3

The difference between every term of an arithmetic progression

Answer 3

Common difference - denoted by “d”

Question 4

In Arithmetic progression , the “n”th term is equal to

Answer 4

a + (n-1) d

Question 5

Sum of numbers upto “n”th term in arithmetic progression

Answer 5

n/2 x ( first term + last term)

= n/2 x {a + [a + (n-1)d]}

= n/2 x [2a + (n-1)d]