RBI Assistant Prelims 2016-17 (Important Questions)

RBI Assistant Prelims 2016-17 (Important Questions)

Directions (1-5): What will come in place of (_) in the following number series ?

1. 5, 8, 17, 32, 53, _

A. 80
B. 76
C. 75
D. 85
E. None of these

Sol. 5 + 3 = 8
     8 + 9 = 17
    17 + 15= 32
    32 + 21= 53
    53 + 27= 80

2. 7, 8, 12, 21, 37, _

A. 62
B. 64
C. 65
D. 68
E. None of these

Sol. 7 + 1^2 = 8
     8 + 2^2 = 12
    12 + 3^2 = 21
    21 + 4^2 = 37
    37 + 5^2 = 62

3. 10, 12, 15, 19, 24, _

A. 30
B. 32
C. 35
D. 36
E. None of these

Sol. 10 + 2 = 12
     12 + 3 = 15
     15 + 4 = 19
     19 + 5 = 24
     24 + 6 = 30

4. 18, 16, 22, 10, 30, _

A. 8
B. 4
C. 3
D. 0
E. None of these

Sol. 18 - 1*2 = 16
     16 + 2*3 = 22
     22 - 3*4 = 10
     10 + 4*5 = 30
     30 - 5*6 = 0.

5. 82, 42, 22, 12, 7, _

A. 3
B. 3.5
C. 4
D. 4.5
E. None of these

Sol. 82/2 + 1 = 42
     42/2 + 1 = 22
     22/2 + 1 = 12
     12/2 + 1 = 7
      7/2 + 1 = 4.5

Directions (6-10): What will come in place of question mark(?) in the following number series ?

6. (9 ÷ 2 * 27 ÷ 9)/(18 ÷ 7.5 * 5 ÷ 4) = ?

A. 3.5
B. 4.5
C. 5.5
D. 6.5
E. None of these 

Sol. (9 ÷ 2 * 27 ÷ 9)/(18 ÷ 7.5 * 5 ÷ 4)
4.5 * 3 = 13.5
2.4*1.25 = 3
13.5/3 = 4.5

7. (986/34) ÷ (65/845) * (675/225) = ? 

A. 1121
B. 1131
C. 1141
D. 1151
E. None of these

Sol. 29 * 13 * 3 = 1131.

8. 634.696 + 71.472 – 396.708 = ? + 28.271

A. 281.189
B. 342.246
C. 323.578
D. 287.426
E. None of these

Sol. = 634.696 + 71.472 – 396.708 – 28.271
= 281.189.

9. (30% of 260) + (60% of 510) – 103 = ?

A. 211
B. 238
C. 281
D. 278
E. None of these

Sol. = 30% of 260 + 60% of 510 – 103
= 384 – 103
= 281.

10. (6438 – 3874 – 664) ÷ (769 – 506 – 63) = ?

A. 8.5
B. 7.5
C. 9.5
D. 4.5
E. None of these


Sol. 6438 – 3874 – 664 = 1900 ; 769 – 506 – 63 = 200; 1900 ÷ 200 = 9.5 

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