Quant Quiz for IBPS CLERK MAINS | 19th December 2018

Directions (1-5): In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.

Q1. 8.1, 9.2, 17.3, 26.5, 43.8, 71.5, 114.1

(a) 17.3                  

(b) 26.5

(c) 43.8                   

(d) 9.2

(e) None of these

Q2. 4,  10,  22,  46,  96,  190,  382

(a) 8                         

(b) 10

(c) 96                      

(d) 382

(e) None of these

Q3. 380,  188,  92,  48,  20,  8,  2

(a) 8                         

(b) 20

(c) 48                      

(d) 188

(e) None of these

Q4. 4.5    16    25    33    38.5    42    43.5

(a) 33

(b) 38.5

(c) 42

(d) 43.5

(e) 25

Q5. 6   49    305    1545    696    1853   

(a) 696

(b) 49

(c) 305

(d) 1545

(e) 1853

Q6. The average of 6 observations is 12. If the number obtained in 7th observation is also included in the numerical value of the six previous observations then overall average decreases by 1. What is the number obtained in the 7th observation?

(a) 6

(b) 5

(c) 8

(d) 7

(e) None of these

Q7. The average age of Nishant and Vibha at the time of their marriage was 26 years. After 12 years of their marriage, the average age of their family which included 5 children was reduced to 18 years. What is the average age of the children?

(a) 8 years

(b) 9.5 years

(c) 10 years

(d) 11 years

(e) None of these

Q8. The first, second and third class fares between two stations are in the ratio of 6 : 4 : 1 and travellers of these three classes are in the ratio of 2 : 5 : 50. If total income being accrued from these three classes in Rs. 12,300, then income from the travellers who travel in third class is :

(a) Rs. 8100

(b) Rs. 8200

(c) Rs. 7500

(d) Rs. 9000

(e) None of these

Q9. In a mixture of spirit and water, amount of spirit is 18%. If 8 litre of this mixture is replaced by equal amount of water, amount of spirit in the mixture becomes 15%. What is the quantity of total mixture?

(a) 48 litre

(b) 40 litre

(c) 46 litre

(d) 52 litre

(e) None of these

Q10. If the price of mangoes goes down by 10%, find the percentage of increase that a family should effect in its consumption so as not to alter expenditure on this account.

1

Solution

1-3

4-78-10

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