Given first term (a) = 18Common difference (d) = n2-n1 = 15 - 18 = 2.5an = -47⇒ an = a + (n-1)d-47 = 18 +(n-1) 2.565 = (n-1) 2.5(n-1) = 26n = 27Therefore -47 is 27th term of the series

Q. 5 B3.9( 17 Votes )

Find the nu

Class 10th AP- Mathematics 6. Progressions

Answer :

Given first term (a) = 18

Common difference (d) = n₂-n₁ = 15 - 18 = 2.5

a_n = -47

⇒ a_n = a + (n-1)d

-47 = 18 +(n-1) 2.5

65 = (n-1) 2.5

(n-1) = 26

n = 27

Therefore -47 is 27^th term of the series

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSFind the nu NEXTCheck wheth

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

view all courses