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RRB Technician Grade 1 Model Paper 4

Question : 49 of 100

Marks: +1, -0

\frac{2.5\times 2.5+0.3\times 0.3+5\times 0.3}{1.6\times 1.6+0.6\times 0.6-1.2\times 1.6}

Solution:

Concept:

This problem uses direct arithmetic simplification of a fraction by calculating the numerator and denominator separately.

Explanation:

Compute the numerator:

2.5 \times 2.5 = 6.25

0.3 \times 0.3 = 0.09

5 \times 0.3 = 1.5

So numerator

= 6.25 + 0.09 + 1.5 = 7.84

Compute the denominator:

1.6 \times 1.6 = 2.56

0.6 \times 0.6 = 0.36

1.2 \times 1.6 = 1.92

So denominator

= 2.56 + 0.36 - 1.92 = 1

Now divide:

\frac{7.84}{1} = 7.84

Answer:

The value is

7.84

, which corresponds to option B.

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