TNPSC Group 4 2018
Aptitude Questions 1 to 25
1.
The value of \(e^{0}\) is
Answer:
B.
1
2.
How many solutions have a linear equation in one variable?
Answer:
B.
Unique solution
3.
The \(7^{\text{th}}\) term of the sequence \(0.12,\ 0.012,\ 0.0012,\ \ldots\) is
Answer:
D.
\(1.2 \times 10^{-7}\)
4.
Simplify:
\(\dfrac{9}{8} \div \dfrac{3}{5}\) - of \(\left(\dfrac{3}{4}+\dfrac{3}{5}\right)\)
\(\dfrac{9}{8} \div \dfrac{3}{5}\) - of \(\left(\dfrac{3}{4}+\dfrac{3}{5}\right)\)
Answer:
D.
\(1\,\dfrac{7}{18}\)
5.
A sum of money triples itself at 8% per annum over a certain time. The time taken is
Answer:
C.
25 years
6.
Find the correct relationship between G.C.D. and L.C.M.
I. G.C.D. = L.C.M.
II. G.C.D. ≤ L.C.M.
III. L.C.M. ≤ G.C.D.
IV. L.C.M. > G.C.D.
I. G.C.D. = L.C.M.
II. G.C.D. ≤ L.C.M.
III. L.C.M. ≤ G.C.D.
IV. L.C.M. > G.C.D.
Answer:
D.
IV
7.
If \(p,\ q,\ r,\ s,\ t\) are in A.P, then the value of \(p - 4q + 6r - 4s + t\) is
Answer:
D.
0
8.
The G.C.D. and L.C.M. of 90, 150, 225 is
Answer:
A.
15, 450
9.
If \(y-\dfrac{1}{y}=6\) find the value of \(y^{3}-\dfrac{1}{y^{3}}\)
Answer:
C.
234
10.
Which of the following statement is false in a Parallelogram?
Answer:
C.
The diagonals are equal
11.
Reciprocal of 0 is __________
Answer:
D.
no reciprocal
12.
Which one of the following statemente is false?
Answer:
B.
If the G.C.D. of any two numbers is 1 they are said to be prime numbers
13.
If the product of four consecutive terms in G.P is 625. Find the first term.
Answer:
C.
5
14.
Gain or loss percent is always calculated on
Answer:
A.
cost price
15.
A student goes to his school from his house at a speed 3 km/hr and returns at a speed of 2 km/hr. If he takes 5 hours in going and coming the distance between his house and school is
Answer:
C.
6 km
16.
If \(x,\ 2x+2,\ 3x+3\) are in G.P, then \(11x,\ 22x+22,\ 33x+33\) form
Answer:
B.
a G.P.
17.
The sum of three numbers is 264 if the first number be twice the second and third number be one-third of the first, then the second number is
Answer:
B.
72
18.
If \(1^{2}+2^{2}+3^{2}+\cdots+10^{2}=385\) then \(2^{2}+4^{2}+6^{2}+\cdots+20^{2}\) is
Answer:
C.
1540
19.
In the ratio \(x\%\) of \(y\) to \(y\%\) of \(x\), its fraction value is equals to
Answer:
D.
1
20.
Arun is now half as old as his father. Twelve years ago the father's age was three times as old as Arun. Now the present age of his father's age is
Answer:
C.
48 years
21.
If \(a,\ b,\ c\) are in A.P.,then \(3^{a},\ 3^{b},\ 3^{c}\) are in
Answer:
B.
G.Р.
22.
If \(-1<r<1\), then the sum of infinite number of a geometric series is
Answer:
C.
\(\dfrac{a}{1-r}\)
23.
The angle in a semi circle is a __________
Answer:
D.
right angle
24.
If \(\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{c}{7}\) then \(\dfrac{a+b+c}{c}\) is
Answer:
B.
\(2\)
25.
Which is biggest ratio?
2:3, 3:5, 4:7, 5:8
2:3, 3:5, 4:7, 5:8
Answer:
D.
2:3