# Approximation Questions for RRB Group D PDF

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## Approximation Questions for RRB Group D PDF

Download Top-10 RRB Group-D Approximation Questions PDF. RRB Group – D Approximation questions based on asked questions in previous exam papers very important for the Railway Group-D exam.

Question 1: $(1-\frac{1}{2}) (1-\frac{1}{3}) (1-\frac{1}{4}) …..(1-\frac{1}{40}) = ?$

a) $\frac{1}{40}$

b) $\frac{1}{20}$

c) Countless

d) Zero

Question 2: $5^{5} \div (5^{3} \times 2^{2})$ is

a) 125

b) 31.25

c) 6.25

d) 12.5

Question 3: (0.07% of 1250) – (0.02% of 650) = ?

a) 0.545

b) 0.625

c) 0.745

d) None of the above

Question 4: 3251 + 587 + 369 – ? = 3007

a) 1250

b) 1300

c) 1375

d) 1200

Question 5: $132 \times 16 \div 2^3 + 4 = ?$

a) 792

b) 176

c) 264

d) 268

Question 6: $384 \div 2^5 \times 3 + 8 = ?$

a) 12

b) 132

c) 3

d) 44

Question 7: $3.0005 – 1.748 = ?$

a) $1.2525$

b) $1.257$

c) $2.8257$

d) $1.9257$

Question 8: Given $17 \times 29 = 493$, then $170 \times 0.029 = ?$

a) 0.0493

b) 4.93

c) 0.493

d) 49.3

Question 9: 25 divided by $\frac{1}{5}$

a) $\frac{1}{125}$

b) 5

c) 25

d) 125

Question 10: $\frac{3}{5} + \frac{3}{7} = ?$

a) $\frac{9}{35}$

b) $\frac{6}{12}$

c) $1\frac{1}{35}$

d) $\frac{6}{35}$

1 – 1/2 = 1/2

1 – 1/3 = 2/3

1 – 1/4 = 3/4

The denominator of the first term gets cancelled by the numerator of the second term and so on…

So, the final value = 1/40

$5^{5} \div (5^{3} \times 2^{2})$=$5^{2}/2^{2}$

=25/4=6.25

(0.07% of 1250) – (0.02% of 650)

.8750 – .1300

.7450

Let’s assume ? = Y.

3251 + 587 + 369 – Y = 3007

4207 – Y = 3007

4207 – 3007 = Y

Y = 1200

The given question can be written as,

25 x (1/5) or 25 x 5 which is equal to 125

Hence, option D is the correct answer.

$\frac{3}{5} + \frac{3}{7}$
= $\frac{21 + 15}{35}$
= $\frac{36}{35} = 1\frac{1}{35}$