Write the first five terms of the sequen | Class 11 Mathematics Chapter Sequence and Series, Sequence and Series NCERT Solutions

Question: Write the first five terms of the sequences whose nth term is an=n(n+2)
Answer:

 an = n(n+2)

Substituting n = 1, 2, 3, 4, and 5, we obtain

 a1 = 1(1+2) = 3

 a2 = 2(2+2) = 8

 a3 = 3(3+2) = 15

 a4 = 4(4+2) = 24

 a5 = 5(5+2) = 35

Therefore, the required terms are 3, 8, 15, 24, and 35.

 


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Sequence and Series.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

Comment(s) on this Question

Welcome to the NCERT Solutions for Class 11 Mathematics - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 1: Write the first five terms of the sequences whose nth term is an=n(n+2)....