Test of Quantitative Aptitude IX-NUMBERS

There are two examination halls, A and B. If 20 students are sent from A to B, then the number of students in each room is the same. If 20 students are sent from B to A, then the number of students in A is thrice of that in B. The number of students in A and B respectively are
100, 80
100, 60
80, 40
140, 100
None of these
Find the 7th root of 82 ( 83 ( 84 ( 85.
8
16
64
128
512
If 1/3 + 1/2 + 1/x = 4, then find the value of x.
18/5
6/7
7/6
19/6
6/19

7/2
2/7
4/5
5/4
5/2

1
3
6
2
12

20.198
20.098
20.088
20.208
21.002
How many whole numbers lie between (8 and +8?
8
15
7
17
9

3
10
6
8
9
What is the least decimal value that should be added to 0.000510 to make it a perfect cube?
0.2
0.000002
0.0002
0.002
0.00002

p > 8
2 < p < 3
1 < p < 6
4 < p < 6
2 < p < 5
Which of the following is equal to 85 percent of 160?
1.88
13.6
136
188
13,600
4v496 is between
3 and 4
4 and 5
5 and 6
6 and 7
7 and 8
Which of the following integers does NOT have a divisor greater than 1 that is the square of an integers?
75
42
32
25
12
What is the least possible product of 4 different integers, each of has a value between – 5 and 10, inclusive?
-5040
-3600
-720
-600
-120
What is the average (arithmetic mean) of the numbers 15, 16, 17, 18, and 19?
14.2
16.5
17
17.5
18
Of the following, which is closest to 0.15x495/9.97?
7.5
15
75
150
750
(-1)2 – (-1)3=
-2
-1
0
1
2
If a, b, and c are three consecutive odd integers such that 10 24
28
30
32
36
If x is an even integers, which of the following is an odd integers?
3x+2
7x
8x=5
X2
X3
For a positive integers n, the number n! is defined to be n(n-1) (n-2)……(1). For example, 4! =4(3)(2)(1). What is the value of 5! – 3!?
120
114
20
15
2
The average (arithmetic mean) of 3 different positive integers is 100 and the largest of these 3 integers is 120. What is the least possible value of the smallest of these 3 integers?
1
10
61
71
80
Which of the following is equal to 3/8 of 1.28?
24/5
12/25
13/50
6/25
4/25
If x, y, and z are single-digits integers and 100(x)+1,000(y)+10(z)=N, what is the units’ digits of the numbers of N?
0
1
X
Y
Z
Rs.6500 was divided equally among a certain number of persons. Had there been 15 more persons each would have got Rs.30 less. Find the original number of persons:
32
34
35
36
The LCM of two numbers is 4800 and their HCF is 160. If one of the numbers is 480, then the other number is :
16
16000
160
1600
Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
1,800
648
2,700
10,800
HCF of 3240, 3600 and a third number is 36 and their LCM is_______24 x 35 x 52 x 72. The third number is
24 x 35 x 52 x 72
24 x 35 x 52 x 72
24 x 35 x 52 x 72
24 x 35 x 52 x 72
A man received a cheque. The rupees has been transposed for paise and vice versa. After spending 5 rupees 42 paise, he discovered that he had exactly six times the value of the correct cheque amount. What amount should he have received?
Rs.3.22
Rs.6.44
Rs.18.25
Rs.8.36
The LCM of two numbers is 280 and their ratio is 7 : 8. The two numbers are:
70, 80
42, 48
35, 40
28, 32
If Dennis is 1/3rd the age of his father Kethi now, and was 1/4th the age of his father 5 years ago, then how old will his father Kethi be 5 years from now?
20 years
45 years
40 years
50 years
Two spinning machines A and B can together produce 3,00,000 metres of cloth in 10 hours, if machine b alone can produce the same amount of cloth in 15 hours, then can much cloth can machine A produce alone in 10 hours?
2,00,000 m
1,00,000 m
1,50,000 m
50,000 m
The ages of the two persons differ by 20 years. If 5 years ago, the older one be 5 times as old as the younger one, then their present ages, in years, are:
25, 5
30, 10
35, 15
50, 30
A man has 1044 candles. After burning, he can make a new candle from 9 stubs left behind. Find the maximum number of candles that can be made:
116
120
130
140
A sum of Rs.36.90 is made up of 180 coins which are either 10 paise coins or 25 paise coins. Determine the number of each type of coins:
126 of 10p coins and 54 of 25 p coins
54 of 10p coins and 126 of 25 p coins
90 of 10p coins and 90 of 25 p coins
None of the above
A man received a cheque in which the rupees were transposed for paise and vice versa. After spending 5 rupees 42 paise, he discovered that he now had exactly six times the value of the correct cheque amount. What amount should he have received?
Rs.6.44
Rs.3.22
Rs.18.25
Rs.8.36
HCF of 3240,3600 and a third number is 36 and their LCM is: 24 x 35 x 52 x 72. The third number is :
24 x 53 x 72
22 x 35 x 72
23 x 35 x 72
25 x 52 x 72
Students of a class are preparing for a drill and are made to stand in a row. If 4 students are extra in a row, then there would be 2 rows less. But there would be 4 more rows if 4 students are less in a row. The number of students in the class is:
96
56
69
65
If x and y are negative, then which of the following statements is/are always true? I)x + y is positive II)xy is positive III)x – y is positive
I only
II only
III only
I and III only
The LCM of two numbers is 4800 and their HCF is 160. If one of the numbers is 480, then the second number is:
16
16000
160
1600
A student was asked to divide a number by 6 and add 12 to the quotient. He, however first added 12 to the number and then divided it by 6, getting 112 as the answer. The correct answer should have been:
122
118
114
124
The sum of the digits of a 3 digit number is subtracted from the number. The resulting number is always:
divisible by 6
not divisible by 6
divisible by 9
not divisible by 9
Ina science talent examination, 50% of the candidates fail in Mathematics and 50% fail in Physics. If 20% fail in both of these subjects, then the percentage of candidates who pass in both Mathematics and Physics is:
0%
20%
25%
50%
If the fractions 9/13,3/2,8/11,5/7 are arranged in ascending order, then the correct sequence is:
9/13,2/3,8/11,5/7
2/3,9/13,5/7,8/11
2/3/8/11,5/7,9/13
5/7,8/11,2/3,9/13
If the numerator and the denominator of proper fraction are increased by the same quantity, then the resulting fraction is :
Always greater than the original fraction
Always less than the original fraction
Always equal to the original fraction
None of the above
In a survey it was found that 65% of the people watched news on TV, 40% read newspaper, 25% read newspaper and watched TV. What percentage of people neither watched TV not read newspaper?
0%
5%
10%
20%
If 9x = 9/3x then x is :
1/3
2/3
3
4/3
The value of (1/4)-2 is:
2
-1/2
-1/16
16
In an examination, 35% of the candidates failed in one subject and 42% failed in another subject. While 15% failed in both the subjects. If 2500 candidates appeared at the examination, how many students passed in either subject but not in both?
325
1175
2125
None of these
A boy was asked to write 25 x 92 but he wrote 2592. The numerical difference between the two is:
0
1
2
3
Which of the following groups of fractions is arranged in ascending order?
5/16, 7/18, 6/17
7/18, 6/17, 5/16
5/16, 6/17, 7/18
6/17, 7/18, 5/16
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Test of Quantitative Aptitude

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swathi

please provide explanation for all questions.......

2899 days 8 hours 25 minutes ago

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