IBPS Clerk Prelims 2016-17 Quant Quiz-5

1. It is required to get 40% marks to pass an exam. A candidate scored 200 marks and failed by 8 marks. What were the maximum marks of that exam ?

A. 530
B. 540
C. 502
D. Can't be determined
E. None of these

Sol. 200 + 8 = 40x/100 ; where 'x' is maximum marks.
40x/100 = 208
Solving, x = 520.

2. The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ?

A. 75
B. 77
C. 73
D. 76
E. None of these

Sol. Lets assume the numbers to be x, x+1, x+2, x+3, x+4
Now, sum = x+x+1+x+2+x+3+x+4 = 190
Solving, x = 36
Smallest number = x = 36
Largest number = x+4= 40
Sum = 36 + 40 = 76.

3. The speed of a truck is 1/3 rd the speed of a train. The train covers 1230 km in 5 hours. What is the speed of the truck ?

A. 85
B. 82
C. 86
D. 80
E. None of these

Sol. Speed of train = 1230/5 = 246 km/hr
Speed of truck = (1/3)*246 = 82 km/hr

4. What is the value of three fourth of sixty per cent of 480 ?

A. 216
B. 218
C. 224
D. 226
E. None of these

Sol. Value = (3/4)*(60*480/100) = 216.

5. If a number is multiplied by three-fourth of itself, the value thus obtained is 10800. What is that number ?

A. 150
B. 140
C. 120
D. 180
E. None of these

Sol. Lets assume the number to be 'x'.
According to the question,
(3x/4)*x = 10800
x^2 = 10800*4/3
x = 120.

6. A train crossed a platform in 43 seconds. The length of the train is 170 metres. What is the speed of the train ?

A. 233 km/hr
B. 265 km/hr
C. 216 km/hr
D. Can't be determined
E. None of these

Sol. As length of the platform not given.
Therefore, can't be determined.

7. 4, 6, 15, 56, 275, _

A. 1644
B. 1500
C. 1426
D. 1826
E. None of these

Sol. 4*2 - 2 = 6    
     6*3 - 3 = 15
    15*4 - 4 = 56
    56*5 - 5 = 275
   275*6 - 6 = 1644

8. 4, 6, 10, 18, 34, _

A. 64
B. 66
C. 62
D. 68
E. None of these

Sol. 4 + 2^1 = 6
     6 + 2^2 = 10
    10 + 2^3 = 18
    18 + 2^4 = 34
    34 + 2^5 = 66

9. 5, 11, 21, 43, 85, _

A. 175
B. 171
C. 172
D. 171
E. None of these

Sol. 5*2 + 1 = 11
    11*2 - 1 = 21
    21*2 + 1 = 43
    43*2 - 1 = 85
    85*2 + 1 = 171

10. 1, 3, 9, 21, 41, _

A. 76
B. 72
C. 74
D. 78
E. None of these

Sol. 1 + 1*2 = 3
     3 + 2*3 = 9
     9 + 3*4 = 21
    21 + 4*5 = 41
    41 + 5*6 = 71

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