NCERT Solutions for Class 11 Base_url Chapter 7 Permutations And Combinations

Write the first five terms of each of the sequences whose nth terms are :

Write the first five terms of the sequence whose nth terms are:

Find the indicated terms in the following sequence whose nth terms are :

Find the indicated terms in the following sequence whose nth terms are:

The Fibonacci sequence is defined by

                  

Find , for n = 1, 2, 3, 4, 5.

Find the first six terms of the sequence whose first term is 1 and whose (n+l)th term is obtained by adding n to the nth term.

Consider the sequence defined by t_n = an² + bn + c. If t₂ = 3, t₄ = 13 and t₇ = 113, show that 3t_n = 17n² – 87n + 115

Write first five terms of the following sequence and obtain the corresponding series.

for all n>1

Write first five terms of the following sequence and obtain the corresponding series.

, n>2

Show that the sequence defined by (where A and B are constant) is an A.P. with common difference A.