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[WpProQuiz 7129]
Directions (1 – 5): Study the following information carefully and answer the questions given below.
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1) Out of the adult population of city A, ratio of males and females is 6:5 respectively, number of adult males in city A is approximately what percent of the number of children in that city?
a) 79%
b) 83%
c) 87%
d) 91%
e) 97%
2) Find the respective ratio of number of children in city B and number of children in city C.
a) 1:2
b) 1:1
c) 2:3
d) 3:4
e) None of these
3) Find the difference between number of adults in city C and number of adults in city D.
a) 6400
b) 3600
c) 5200
d) 4800
e) None of these
4) Out of the adult population of city E, 20% of the population is female and rest are males. Number of adult males is what percent more/less than the number of children in that city?
a) 20% less
b) 20% more
c) 15% less
d) 25% more
e) None of these
5) Find the sum of total number of children in all the cities.
a) 30124
b) 28144
c) 26176
d) 32142
e) None of these
Directions (6 – 10): In each of these questions, one term in the given number series is wrong. Find out the wrong term.
6) 32, 31, 58, 160, 644, 3195
a) 58
b) 160
c) 644
d) 31
e) None of these
7) 2, 3, 9, 54, 403, 3612
a) 3
b) 403
c) 9
d) 54
e) None of these
8) 4, 4, 18, 65, 266.5, 1241.25
a) 18
b) 65
c) 266.5
d) 4
e) None of these
9) 6, 14, 42, 135, 517, 2377.5
a) 42
b) 517
c) 135
d) 14
e) None of these
10) 11, 24, 40, 56, 75, 96
a) 75
b) 40
c) 56
d) 24
e) None of these
Answers :
Directions (1-5) :
1) Answer: e)
Total population of city A = 22/100 x 80000 = 17600
Adult population of city A = (100 – 36)/100 x 17600
= 64/100 x 17600
= 11264
Number of adult males = 6/11 x 11264 = 6144
Number of children in city A = 36/100 x 17600 = 6336
Required percentage = 6144/6336 x 100 = 96.96% = 97% approx.
2) Answer: b)
Total population of city B = 30/100 x 80000 = 24000
Total number of children in city B = 24/100 x 24000 = 5760
Total population of city C = 16/100 x 80000 = 12800
Total number of children in city C = 45/100 x 12800 = 5760
Required ratio = 5760:5760 = 1:1
3) Answer: a)
Total population of city C = 16/100 x 80000 = 12800
Number of adults in city C = (100 – 45)/100 x 12800
= 55/100 x 12800
= 7040
Total population of city D = 24/100 x 80000 = 19200
Number adults in city D = (100 – 30)/100 x 19200
= 70/100 x 19200
= 13440
Required difference = 13440 – 7040 = 6400
4) Answer: b)
Total population of city E = 8/100 x 80000 = 6400
Adult population of city E = (100 – 40)/100 x 6400
= 60/100 x 6400
= 3840
Number of adult males in city E = (100 – 20)/100 x 3840
= 80/100 x 3840
= 3072
Number of children in city E = 40/100 x 6400 = 2560
Required percentage = (3072 – 2560)/2560 x 100
= 512/2560 x 100
= 20% more
5) Answer: c)
Total population of city A = 22/100 x 80000 = 17600
Number of children in city A = 36/100 x 17600 = 6336
Total population of city B = 30/100 x 80000 = 24000
Number of children in city B = 24/100 x 24000 = 5760
Total population of city C = 16/100 x 80000 = 12800
Number of children in city C = 45/100 x 12800 = 5760
Total population of city D = 24/100 x 80000 = 19200
Number of children in city D = 30/100 x 19200 = 5760
Total population of city E = 8/100 x 80000 = 6400
Number of children in city E = 40/100 x 6400 = 2560
Required sum = 6336 + 5760 + 5760 + 5760 + 2560 = 26176
Directions (6-10) :
6) Answer: b)
(32 – 1) x 1 = 31
(31 – 2) x 2 = 58
(58 – 3) x 3 = 165 (not 160)
(165 – 4) x 4 = 644
(644 – 5) x 5 = 3195
7) Answer: d)
2 x 5 – 7 = 3
3 x 6 – 9 = 9
9 x 7 – 11 = 52 (not 54)
52 x 8 – 13 = 403
403 x 9 – 15 = 3612
8) Answer: b)
4 x 0.5 + 2 = 4
4 x 1.5 + 12 = 18
18 x 2.5 + 22 = 67 (not 65)
67 x 3.5 + 32 = 266.5
266.5 x 4.5 + 42 = 1241.25
9) Answer: c)
6 x 0.5 + 11 = 14
14 x 1.5 + 21 = 42
42 x 2.5 + 31 = 136 (not 135)
136 x 3.5 + 41 = 517
517 x 4.5 + 51 = 2377.5
10) Answer: b)
1 x 11 = 11
2 x 12 = 24
3 x 13 = 39 (not 40)
4 x 14 = 56
5 x 15 = 75
6 x 16 = 96
