Advertisement Remove all ads

If tn = 2n – 5 is the nth term of an A.P., then find its first five terms - Algebra

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Sum

If tn = 2n – 5 is the nth term of an A.P., then find its first five terms

Advertisement Remove all ads

Solution

tn = 2n – 5    ......[Given]

∴ t1 = 2(1) – 5 = 2 – 5 = – 3

t2 = 2(2) – 5 = 4 – 5 = – 1

t3 = 2(3) – 5 = 6 – 5 = 1

t4 = 2(4) – 5 = 8 – 5 = 3

t5 = 2(5) – 5 = 10 – 5 = 5

∴ The first five terms of A.P. are – 3, – 1, 1, 3, 5.

Concept: General Term of an Arithmetic Progression
  Is there an error in this question or solution?
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×