# Mixed Quantitative Aptitude Questions Set 99

Directions(1-5): Find the wrong number of the following series.

1. 29, 37, 21, 43, 13, 53
21
37
53
43
29
Option D
29 + 1 × 8 = 37
37 – 2 × 8 = 37 – 16 = 21
21 + 3 × 8 = 21 + 24 = 45
45 – 4 × 8 = 45 – 32 = 13
13 + 5 × 8 = 13 + 40 = 53

2. 10, 8, 13, 35, 135, 671
8
671
13
35
10
Option B
10 × 1 – 2 = 8
8 × 2 – 3 = 13
13 × 3 – 4 = 35
35 × 4 – 5 = 135
135 × 5 – 6 = 675 – 6 = 669

3. 150, 290, 560, 1120, 2140
1120
2140
290
150
560
Option A
150 × 2 – 1 × 10 = 300 – 10 = 290
290 × 2 – 2 × 10 = 580 – 20 = 560
560 × 2 – 3 × 10 = 1120 – 30 = 1090
1090 × 2 – 4 × 10 = 2180 – 40 = 2140

4. 1, 5, 13, 31, 61, 125
13
5
61
125
31
Option E
1 + 2^2 = 1 + 4 = 5
5 + 2^3 = 5 + 8 = 13
13 + 2^4 = 13 + 16 = 29
29 + 2^5 = 29 + 32 = 61
61 + 2^6 = 61 + 64 = 125

5. 8, 11, 17, 47, 128, 371
8
17
128
47
371
Option B
8 + 3 = 11
11 + 3^2 = 11 + 9 = 20
20 + 3^3 = 20 + 27 = 47
47 + 3^4 = 47 + 81 = 128
128 + 3^5 = 128 + 243 = 371

6. Directions(6-10): Study the following graphs carefully to answer the qons that follow.
Number of employees (in hundred) of three categories in 5 factories Percentage of females in each group 7. By what percent the boys in C3 post in factories T3 and T4 together are more or less than the girls on C2 post in factories T1 and T2 together ?
35%
47%
38%
40%
42%
Option B
Boys in C3 post = 64/100*2250+30/100*1700 = 1950
Girls in C2 post = 64/100*1350+30/100*1550 = 13290
Required% = 621/1329*100 == 47%

8. Find the ratio of total girl in C3 in factories T3 and T4 together and girl C1 in factory T2.
2:3
3:5
4:1
2:7
5:9
Option C
Required ratio = [36/100*2250 + 70/100*1700]/[40/100*1250] = 4:1

9. The girls in Manager post in company T3 can finish a certain piece of work in 20 days. After they began to work, 20 girls left the work after every 5 days. Find the number of days required to complete the work.
21(13/19) days
23(11/17) days
21(12/15) days
21(13/17) days
19(10/17) days
Option D
No. of girls = 56/100*750 = 420
420*20 = 420*5 + 400*5 + 380*5 + 360*5 + 340*x
=> 340 + x = 600
=> x = 1(13/17)
Required days = 5+5+5+5+1(13/17)
= 21(13/17) days

10. Find the average number of boys in C1 post in all factories together .
300
454
400
350
520
Option C
Required average = ½[30/100*950 + 60/100*1250+44/100*750+20/100*1050+50/100*850] = 1/5*2000
= 400

11. The average age of boy in C3 in factory T4 is 74 years. Two-fifth of them have average age of 76 years, 50% of remaining have average age 4 years less that of all boy designers. Find the average age of remaining boy designers.
71 year 2 months
84 year 3 months
66 year 4 months
77 year 5 months
75 year 4 months
Option E
Number of boy in C3 = 30/100*1700 = 510
510*74 = 204*76 + 153*70 + 153*x
=> x = 75 year 4 months