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CTET Paper II (Mathematics and Science) Sep 2015 Solved Paper

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Question : 43 of 150

Marks: +1, -0

The value of

1+\frac{11}{10}+\frac{11}{100}+\frac{111}{1000}+\frac{111}{10000}

is

3.3221
2.3321
2.245
2.432

Solution:

Concept:

Convert each fraction into its decimal form, then add them directly.

Explanation:

First term:

1 = 1.0000

Second term:

\frac{11}{10} = 1.1

Third term:

\frac{11}{100} = 0.11

Fourth term:

\frac{111}{1000} = 0.111

Fifth term:

\frac{111}{10000} = 0.0111

Add all decimals:

1 + 1.1 = 2.1

;

2.1 + 0.11 = 2.21

;

2.21 + 0.111 = 2.321

;

2.321 + 0.0111 = 2.3321

Answer:

2.3321 (Option B)

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