RRB PO Prelims Quantitative Aptitude (Day-10)

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IBPS RRB PO Prelims

Simplification

Direction (1-5): What value should come in place of (?) in the following questions?

1) 36 ÷ 18×2+√3844 + 902 ÷ ? = 148

A) 22

B) 11

C) 2

D) 33

E) 10

2) 45% of 1600 + 30% of 450 – 191 × ? = 91

A) 4

B) 3

C) 2

D) 5

E) 8

3) 32% of 625 + 14 2/7 % of 1491 = (?)² – √2304 + 20

A) 15

B) 31

C) 19

D) 11

E) 21

4) 4284 ÷ 14 × 3 – {(20-5) x 4+ 306 ÷3} =?

A) 236

B) 652

C) 756

D) 262

E) None of these

5) √5184 – √1444 + ? = √7225 + √3136

A) 110

B) 103

C) 105

D) 104

E) None of these

Missing Number series

Direction (6-10): What value should come in the place of (?) in the following number series?

6) 12 , 7, 9 , 21 , 88 , 709 , ?

A) 11350

B) 12360

C) 11250

D) 11360

E) 15320

7) 15 , 18 , 16 , 19 , 17 , 20 , ?

A) 23

B) 22

C) 18

D) 20

E) 17

8) 5, 6, 10, 33, 128, ?, 3864

A) 650

B) 346

C) 745

D) 542

E) 645

9) 5, 12, 9, 9, 13, ?, 17

A) 13

B) 6

C) 17

D) 9

E) 5

10) 142, 134, 123, 107, 84, ?

A) 55

B) 32

C) 56

D) 52

E) 64

Answers :

Directions (1-5) :

1) Answer: B

36 ÷ 18 × 2 +√3844  + 902 ÷ x = 148

2 × 2 + 62 + 902 ÷ x = 148

4 + 62 + 902/x = 148

902/x = 148 – 66

x = 902/82 = 11

2) Answer: A

45% of 1600 + 30% of 450 – 191 × (x) = 91

720 + 135 – 191 × (x) = 91

x = (855-91)/191 = 4

3) Answer: E

32 % of 625 + 14 2/7 % of 1491 = (x)² – √2304 + 20

(32/100) × 625 + (1/7) of 1491 = x² – √2304+20

200 + 213 = x² – 48 + 20

413 = x² – 28

x = √(413+28)

x = √441 = 21

4) Answer: C

4284 ÷ 14 × 3 – {(20-5) x 4+ 306 ÷3} = x

306 × 3 – {(15 × 4 )+ 102 }= x

918 – {60+102 } = x

x = 918 – 162 = 756

5) Answer: E

√5184 – √1444 + ? = √7225 + √3136

72 – 38 + x = 85 + 56

x = 141 – 34 = 107

Directions (6-10) :

6) Answer: A

12 * 0.5 +1 = 7

7 * 1 + 2 = 9

9 * 2 + 3 = 21

21 * 4 + 4 = 88

88 * 8 + 5 = 709

709 * 16 + 6 = 11350

7) Answer: C

15 +3 =18

18 – 2 = 16

16 + 3 = 19

19 – 2 = 17

17 + 3 = 20

20 – 2 =18

8) Answer: E

5*1 + 1 = 6

6*2 – 2 = 10

10*3 + 3 = 33

33*4 – 4 = 128

128*5 + 5 = 645

645*6 – 6 = 3864

9) Answer: B

There are two series is going on

First:

5 + 4 = 9

9 + 4 = 13

13 + 4 =17

Second:

12 – 3 = 9

9 – 3 = 6

10) Answer: D

142        134      123        107       84         52

8            11        16           23      32

3              5           7          9

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