Quantitative Aptitude

Directions (Q. 1-5): What should come in place of the question mark (?) in the following number series?

1. 9 19 40 83 ? 345 696

1) 162 

2) 170 

3) 175 

4) 166 

5) None of these

2. 980 484 236 112 50 ? 3.5

1) 25 

2) 17 

3) 21 

4) 29 

5) None of these

3. 8 9 20 63 256 1285 ?

1) 6430 

2) 7450 

3) 7716 

4) 7746 

5) None of these

4. 1015 508 255 129 66.5 ? 20.875

1) 34.50 

2) 35 

3) 35.30 

4) 35.75 

5) None of these

5. 12 12 18 36 90 270 ?

1) 945 

2) 810 

3) 1080 

4) 1215 

5) None of these

Directions (Q. 6-10): Following pie-chart shows marks scored by a student in four different subjects. Full marks for each subject is 200 and to pass the student should score more than or equal to 50%. The student has scored total 480 marks out of 800.

6. How much marks he scored in Chemistry?

1) 75 

2) 80 

3) 90 

4) 100 

5) None of these

7. What is the average marks he scored in each subject?

1) 160 

2) 180 

3) 100 

4) 120 

5) 140

8. What is the difference between the marks he scored in English and that in Chemistry?

1) 10 

2) 12 

3) 15 

4) 18 

5) 20

9. In how many subjects did he fail?

1) 4 

2) 3 

3) 2 

4) 1 

5) None of these

10. What is the ratio of failed subjects to passed subjects?

1) 1 : 4 

2) 1 : 3 

3) 3 : 4 

4) 4 : 5 

5) None of these

Answers:

1. 2

The given series is

×2+1, ×2+2, ×2+3, ×2+4, ...

2. 5

The given series is ÷2 -6

Reqd no. = 50 ÷ 2 - 6 = 25 - 6 = 19

3. 3

The given series is

×1+1, ×2+2, ×3+3, ×4+4, ×5+5, ×6+6 is

4. 4

(1015 + 1) ÷ 2 = 508;

(508 + 2) ÷ 2 = 255; (255 + 3) ÷ 2 = 129;

(129 + 4) ÷ 2 = 66.5; (66.5 + 5) ÷ 2 = 35.75;

(35.75 + 6) ÷ 2 = 20.875

5. 1

The given series is

×1, ×1.5, ×2, ×2.5, ...

6. 4

75/360 * 480 = 100

7. 4

= 480/4 = 120

8. 5

15/360 * 480 = 20

9. 4

10. 2