Wipro Aptitude Test Questions
91 / 362
void main()
{
int a[]={1,3,5,7};
printf("%d",&a[3]-&a[1]);
}
A1
B2
C3
D4
ENone of these
Answer: Option B
Explanation:&a[i] = &a + i;
Hence, &a[3] - &a[1] = (&a + 3) - (&a + 1) = 2
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92 / 362
What data structures you should use for dictionary searching and it should be capable of doing spell check also ?
Aarray
BHashing
Clinked list
DTree
Answer: Option B
Explanation:Here is no explanation for this answer
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93 / 362
The sum of the digits of a two digit number is 8. If the digits are reversed the number is decreased by 54. Find the number.
A17
B71
C18
D81
Answer: Option B
Explanation:x+y = 8 -----(1)
(10y+x) - (10x+y) = 54 => 9y-9x = 54
y-x = 6 -------(2)
By solving eq. (1) and (2)
y = 7 and x = 1
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94 / 362
The average age of 30 students is 9 years .If the age of their teacher is included ,it becomes 10 years . The age of the teacher (in years ) is :
A27
B31
C35
D40
Answer: Option D
Explanation:Given 30 students avg. age = 9 years.
So total age of 30 students = 9*30 = 270 years.
Teacher's age included.
So, avg. of 30 students + one teacher = 10 years.
=> Total age of 30 students + one teacher = 10 * 31 = 310 years.
Therefore age of teacher = (310-270) = 40 years.
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95 / 362
In a certain school, 20% of the students are below 8 years of age. The number of students above 8 years of age is (2/3) of the no. of students of 8 years age which is 96. what is the total number of students in the school?
A201
B200
C140
D198
Answer: Option B
Explanation:Lets assume total student = x
0.2x+(2/3)*96+96=x
x=200
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96 / 362
The average age of 24 boys and the teacher is 15 years. When the teacher's age is excluded, the average decreases by 1. What is the age of the teacher ?
A38 years
B39 years
C40 years
DData inadequate
Answer: Option B
Explanation:Given one teacher + 24 students avg. age = 15 years.
So total age of one teacher + 24 students = 15*25 = 375 years.
Teacher's excluded
So, 24 students avg. age = 14 years.
=> Total age of 24 students = 24 * 14 = 336 years.
Therefore age of teacher = (375-336) = 39 years.
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97 / 362
Sixteen men can complete a work in twelve days. Twenty four children can complete the same work in 18 days. 12 men and 8 children started working and after eight days three more children joined them. How many days will they now take to complete the remaining work?
A2 days
B4 days
C6 days
D8 days
Answer: Option B
Explanation:Lets assume Men as "M" and children as "C" .
So as per the Question
16M*12 = 24C*18
=> M/C=9/4
Total work= 16*9*12
Lets assume days required to complete remaining work = x days.
(12*9+8*4)*8+(12*9+11*4)*x=16*9*12
x=608//152 = 4 days.
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98 / 362
The average of the first five prime numbers greater than 20 is:
A32.2
B31
C31.01
D32
ENone of these
Answer: Option A
Explanation:Here is no explanation for this answer
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99 / 362
Two-third of one-seventh of a number is 87.5% of 240. Whar is the number?
A2670
B2450
C2205
D1470
ENone of these
Answer: Option C
Explanation:Lets assume no. = x
2/3 * 1/7 * x = 87.5*240/100
By solving
x= 2205
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100 / 362
A vessel is full of a mixture of spirit and water in which there is found to be 17% of spirit by measure. Ten litres are drawn off and the vessel is filled up with water. The proportion of spirit is now found to be 15 1/9%. How much does the vessel hold?
A70 litres
B90 litres
C80 litres
D85 litres
Answer: Option B
Explanation:In 10L of water drawn amount of spirit present is = (17/100)*10 =1.7 L .
Lets assume x is the capacity of the vessel
from 17% amount of spirit comes down to 15 1/9% .
The difference between this percentage is (17% - 15 1/9%) = 17/9 % x
17/9 % x =1.7 litres .
=> x = 90 L
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