Simplification questions for Railway Group D Exam Set-4 PDF
Download Top-15 RRB Group-D Simplification Questions Set-4 PDF. RRB Group – D Simplification questions based on asked questions in previous exam papers very important for the Railway Group-D exam.
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Question 1: 4% of 400 – 2% of 800 = ?
a) 0
b) 1
c) 8
d) 16
Question 2: $\frac{2}{2+\sqrt{2}}$ = ?
a) $2+\sqrt{2}$
b) $\sqrt{2}$
c) $2-\sqrt{2}$
d) $2\sqrt{2}$
Question 3: $\sqrt{6400}$ = ?
a) 40
b) 80
c) 60
d) None of these
Question 4: $0.5 \div 12 + 0.25 \times 0.05$ = ?
a) 0.0525
b) 0.7
c) 0.00196
d) None of these
Question 5: The simplest form of $\frac{391}{667}$ is
a) $\frac{23}{31}$
b) $\frac{19}{23}$
c) $\frac{15}{19}$
d) $\frac{17}{29}$
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Question 6: 25 divided by $\frac{1}{5}$
a) $\frac{1}{125}$
b) 5
c) 25
d) 125
Question 7: $4 + (1/6) [{-10 \times (25 – 13 – 3)} \div (-5) ]$ = ?
a) 8
b) 9
c) 6
d) 7
Question 8: $ \frac{3}{5} + \frac{3}{7} = ? $
a) $\frac{9}{35}$
b) $\frac{6}{12}$
c) $1\frac{1}{35}$
d) $\frac{6}{35}$
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Question 9: 58% of 350 is:
a) 217
b) 203
c) 210
d) 196
Question 10: Select the option that can replace the question mark (?) in the following equation.
$ 2 + 5\div [5+8\div( 1+\frac{1}{3}) – 1] $ = ?
a) $ \frac{1}{2} $
b) $ \frac{5}{2} $
c) $ \frac{3}{2} $
d) 2
Question 11: The value of $122 + 345 – 3 \div 1116 \times 372 $ is :
a) 466
b) 469
c) 446
d) 460
Question 12: $ 8 \times $ { 5 – ( – 2) $ \times$ ( – 3) } = ?
a) 8
b) -168
c) 88
d) -8
Question 13: 18% of 60 is 54% of ………
a) 40
b) 30
c) 20
d) 180
Question 14: Find the value of the given expression.
$ 6 – 36 \times 3 \div 6 + 5 = ? $
a) 7
b) $ \frac{-42}{11} $
c) -7
d) $ \frac{42}{11} $
Question 15: Solve the following:
( – 6 ) [40 $\div$ { 7 – ( – 3) } ] = ?
a) -24
b) -60
c) 60
d) 24
RRB Group D previous year papers
Answers & Solutions:
1) Answer (A)
4% of 400 = $ \frac {4}{100} \times 400 $= 16
2% of 800 = $ \frac {2}{100} \times 800 $ = 16
16 – 16 = 0
2) Answer (C)
(a+b)(a-b) = $ a ^ {2} – b^2$
Likewise $ (\sqrt {2} +1)(\sqrt {2} – 1) = 2 -1 = 1$
ie. $ \sqrt{2} -1 = \frac {1}{\sqrt{2}+1}$
So, the option is C
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3) Answer (B)
$ \sqrt{6400} = \sqrt {80 \times 80} $ = 80
4) Answer (A)
.5 $ \div$ 12 = .04
.25* .05 = .0125
.04 + .0125 = .0525
Hence, (a) is the answer.
5) Answer (D)
$\frac{391}{667}$ = $\frac{17 \times 23}{29 \times 23}$ = $\frac{17}{29}$
6) Answer (D)
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.
7) Answer (D)
$4 + (1/6) [{-10 \times (25 – 13 – 3)} \div (-5) ]$
$4 + (1/6) [{-10 \times (9)} \div (-5) ]$
$4 + (1/6) [18]$
$4 + 3 = 7$
Hence, option D is the correct answer.
8) Answer (C)
$ \frac{3}{5} + \frac{3}{7} $
LCM of 7 and 5 is 35 So the equation can be written as,
= $\frac{21 + 15}{35}$
= $\frac{36}{35} = 1\frac{1}{35}$
Hence, option C is the correct answer.
9) Answer (B)
The given equation can be written as,
0.58 x 350 = 203
Hence, option B is the correct answer.
10) Answer (B)
= $ 2 + 5\div [5+8\div( 1+\frac{1}{3}) – 1] $
= $ 2 + 5\div [5+8\div( \frac{4}{3}) – 1] $
= $ 2 + 5\div [5+8 \times \frac{3}{4} – 1] $
= $ 2 + 5\div 10 $
= $ \frac{5}{2} $
Hence, option B is the correct answer.
11) Answer (A)
Using BODMAS rule we can write the equation as,
$467 – \frac{1}{372} \times 372 $
$467 – 1 = 466$
Hence, option A is the correct answer.
12) Answer (D)
By using BODMAS rule the given equation can be written as,
8 x (5 – 6) = -8
Hence, option D is the correct answer.
13) Answer (C)
The equation can be written as,
18% of 60 = 54% of x
54/5 = 0.54x
x = 20
Hence, option C is the correct answer.
14) Answer (C)
Using BODMAS rule,
= 6 – 36 x (3/6) + 5
= 6 – 18 + 5 = -7
Hence, option C is the correct answer.
15) Answer (A)
( – 6 ) [40 $\div$ { 7 – ( – 3) } ]
=( – 6 ) [40 $\div$ { 10 } ]
=-$6\times 4$
=-24
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