NCERT Class XI Mathematics - Sequences and Series - Solutions
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Question : 3
Total: 106
Solution:
We have, a n 2 n
Substituting n = 1, 2, 3, 4, 5, we get
a 1 2 1 a 2 2 2 a 3 2 3 a 4 2 4
a 5 2 5
∴ The first five terms are 2, 4, 8, 16, 32.
Substituting n = 1, 2, 3, 4, 5, we get
∴ The first five terms are 2, 4, 8, 16, 32.
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