puzzles quantitative aptitude test

Online aptitude test questions and answers for company exam

Question 21 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
A four digit positive number having all non-zero distinct digits is such that the product of all the digits is least. If the difference of hundreds digit and tens digit is 1, then total number of possibilities for that number are:
A
6
B
4
C
9
D
24
Question 21 Explanation: 
Since product is least so number will have digits 1, 2, 3, and 4
Difference is one so possibilities for hundreds and tens digit are 2, 1 and 3, 2 and 4, 3
So possible number are 6
4 2 1 3
3 2 1 4
1 3 2 4
4 3 2 1
1 4 3 2
2 4 3 1






Question 22 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
The compound interest on Rs.5000 for 3 years at 8% for first year, 10% for Second year and 12% for third year, will be
A
1658.5
B
1500.5
C
1675.5
D
1652.80
Question 22 Explanation: 
Amount = Rs.{5000*(1+(8/100))*(1+(10/100))*(1+(12/100))}
Solve
= Rs. 6652.80
CI = 1652.80 Rs

Question 23 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Five words IS, AM, ARE, WAS, WERE are coded in the following manner. Word Code IS 2 AM 6 ARE? WAS 49 WERE 84 Code for ARE is
A
34
B
19
C
8
D
20
Question 23 Explanation: 
On arranging all the letters of the words IS, AM, ARE, WAS, WERE in increasing order we get
AA, AE, EEI, MRR, SSWW as the code for corresponding words. On taking their positional equivalent, we get
IS = AA = 1+1 = 2
AM = AE = 1+5 = 6
Similarly for others






Question 24 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
A train travels 50 km. distance with speed 50 km./hrs and next 50 km. with speed 60 km./hrs. Average speed will be
A
54
B
54.54
C
52
D
50
Question 24 Explanation: 
Total distance travelled = 100 km.
Total time taken = (50/50) + (50/60) hrs = 11/6 hrs
so average speed = 100/(11/6) = 600/11 = 54.54
Question 25 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
How many points on the line 2x-3y+7=0 are at a distance of 3 unit form the point P(2, -1).
A
4
B
1
C
Infinite
D
0
Question 25 Explanation: 
At first, find the distance of a point from the line
using ax1+by1+c/Sqrt(a^2+b^2) (Where P(2, -1) is x1, y1 and get a, b, c by comparing given equation with ax+by+c=0
distance is 14/sqrt13, which is greater then 3, so there is no point on the line..






Question 26 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
What is the next number of the following sequence. 9, 7, 7, 9, 13, ....
A
13
B
10
C
9
D
17
Question 26 Explanation: 
3^2 = 9 = 9 (sum of digit)
4^2 = 16 = 7 (Sum of digit)
5^2 = 25 = 7 (Sum of digit)
6^2 = 36 = 9 (Sum of digit)
7^2 = 49 = 13 (Sum of digit)
Similarly
8^2 = 64 = 10 (Sum of digit)

10
Question 27 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
What is the next number of the following sequence 5, 8, 12, 18, 24, 30, 36, 42, ...?
A
44
B
50
C
52
D
64
Question 27 Explanation: 
in the first step select the prime number
2 3 5 7 11 13 17 19 23 29
add two adjcent number at at time you will get the series
5 8 12 18 24 30 36 42 52







Question 28 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
rank of the word HORSE in the dictionary formed by the letters of the word HORSE
A
25
B
34
C
28
D
45
Question 28 Explanation: 
Total number of words = 5*4*3*2*1 = 120
now increasing sequence of letters of the word HORSE is E, H, O, R, S
so rank of HORSE = (120/5)*(2-1)+(24/4)*(2-1)+(6/3)*(2-1)+(2/2)*(2-1)+1
= 24+6+2+1+1 = 34
Question 29 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Next number of the sequence 2, 8, 24, 64, 160, .....
A
384
B
368
C
264
D
246
Question 29 Explanation: 
12^1 = 2
22^2 = 8
32^3 = 24
42^4 = 64
52^5 = 160
62^6 = 384






Question 30 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
In what time will a sum of money double itself at 25/4 % p.a. simple interest?
A
8 years
B
10 years
C
20 years
D
16 years
Question 30 Explanation: 
Suppose, sum = x. Then S.I. = x & Rate = 25/4 %
Therefore time = (100*x)/(x* 25/4) = 16 years

There are 30 questions to complete.

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