TNPSC Group 1 2015 Preliminary Examination
Aptitude Questions 26 to 45
26.
If + means ×, × means –, ÷ means + and – means ÷ then what is the value of (175 – 25) ÷ (5 + 20) × (3 + 10)
Answer:
C.
77
27.
In a geometric series, if the fourth term is \(\dfrac{2}{3}\) and seventh term is \(\dfrac{16}{81}\), then what is the first term of the series?
Answer:
D.
\(\dfrac{9}{4}\)
28.
Find the percentage increase in the area of a triangle if its each side is doubled.
Answer:
C.
300 %
29.
The sequence follow a regular pattern. Find the correct letter for question mark, to complete the sequence .
C E I K O Q ?
C E I K O Q ?
Answer:
D.
U
30.
Find Least Common Multiple of \(\dfrac{4}{5},\ \dfrac{3}{10}\) and \(\dfrac{7}{15}\).
Answer:
A.
\(\dfrac{84}{5}\)
31.
Three numbers are in the ratio 1 : 2 : 3. Their highest common factor is 12. Find the numbers
Answer:
A.
12, 24, 36
32.
If the two numbers are in the ratio of 2 : 3 and the product of their highest common factor and least common multiple is 150, then find the sum of the numbers.
Answer:
D.
25
33.
Alex invested an amount of Rs. 8,000 in a fixed deposit scheme for 2 years at compound interest rate 5% per annum. How much amount will Alex get on maturity of the fixed deposit?
Answer:
C.
Rs. 8,820
34.
The difference between the compound interest and simple interest on a certain sum at 8% per annum for 2 years is Rs. 240. Find the sum.
Answer:
C.
Rs. 37,500
35.
If the rate of simple interest is 12% per annum, then find the amount that would get interest of Rs. 6,000 per annum.
Answer:
B.
Rs. 50,000
36.
Three solid metal cubes, whose edges are 6 cm, 8 cm and 10 cm are melted and a new cube is made. Find the length of edge of the new cube.
Answer:
A.
12 cm
37.
Find the number in the place of question mark:
21, 25, 34, 50, ?, 111, 160
21, 25, 34, 50, ?, 111, 160
Answer:
C.
75
38.
A can do a work in 10 days and B can do the same work in 15 days. They earn Rs. 1,500 together. How will they share this amount?
Answer:
B.
Rs. 900 and Rs. 600
39.
If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same work in 2 days, then what is the time taken by 15 men and 20 boys to complete the same type of work?
Answer:
A.
4 days
40.
A plot of land is in the form of a quadrilateral where one of its diagonals is 100 m long. If two vertices on either side of this diagonals are 50 m away from the diagonal. Find the area of the plot of land
Answer:
A.
5000 m\(^{2}\)
41.
If “NOIDA” is written as 39658, how will “INDIA” be written?
Answer:
B.
63568
42.
Read the following statements :
1. Either A and B are of the same age or A is older than B
2. Either C and D are of the same age or D is older than C
3. B is older than C
Which one of the conclusions can be drawn from the above statements?
1. Either A and B are of the same age or A is older than B
2. Either C and D are of the same age or D is older than C
3. B is older than C
Which one of the conclusions can be drawn from the above statements?
Answer:
A.
A is older than C
43.
The minute hand of a circular clock is 14 cm long and that of hour hand is 7 cm. Find how far does the tip of the minute and hour hand move in 30 minutes?
Answer:
C.
44 cm, 1.83 cm
44.
A heap of paddy is in the form of a right circular cone whose diameter is 4.8 m and height 1.8 m. If the heap is to be covered exactly by a canvas to protect it from rain, find the area of the canvas required.
Answer:
A.
22.6 m²
45.
If \(a^x=b,\ b^y=c,\ c^z=a\), then what is the value of \(xyz\)?
Answer:
D.
1