TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Mental Ability-Part 7
151. Simplify:
25 x 92
A) 1 B) 2
C) 3 D) 1
Answer : (C)
154. In
the geometric series, 1, 1, 1, ………
A)
1 B) 1
C) 1 D)
1
B) 2. 7164345
25° O 35°
III
TNPSC Group I Exam-1999
151. Simplify:
25 x 92
82 x 35
A) 1 B) 2
6 3
C) 3 D) 1
2 8
Answer : (A)
152. The product of two numbers is 192. If the
difference between these two numbers is 4, what is the sum of these two
numbers?
A) 28 B) 26
C) 32 D) 42
Answer : (A)
153. Which of the following numbers is exactly
dividable by 24?
A) 63810 B) 537804
C) 3125736 D) 35718
Answer : (C)154. In
the geometric series, 1, 1, 1, ………
3
6 12
the 8th term is
A)
1 B) 1
24 48
C) 1 D)
1
384 128
Answer : (C)
155. If a number is added with its square and
when 28 is added, the resulting number is 300, what is that number?
A) 18 B) 15
C) 16 D) 14
Answer : (C)
156. The HCF of two numbers is 6 and their LCM
is1260. If one of the number us 126, the other number is
A) 30 B) 60
C) 90 D) 15
Answer : (B)
|
157. If log10 x = 5.1342618, then the
value of log10 x1/4 will be
|
A) 1.2835655
B) 2. 7164345 C) 2.
7835655
D) 3.2164345
Answer : (C)
158. a, b, c, are three consecutive multiples of
3. which of the following is divisible by 9?
I. a + b
II. ab
III. a + b + c
Of these
A) I only B) II only
C) III only D) Both II and III
Answer : (C)
159. In the fiqure < AOB = ?
C
25° O 35°
B
A
A) 120° B) 60°
C) 80° D) 110°
Answer : (A)
160. In the fig., AB = 8 cm, BC = 4 cm, CA = 6
cm. The radio of three circles
are
(in cm)
III
C
A B
I
II
I II III
A) 5 3 1
B) 3 5 1
C) 3 1 5
D) 4 3 2
Answer : (A)
161. Two parallel chords on the same side of the
centre of a circle are of lengths 6 cm €r 8 cm. If these two are 1 cm apart,
then the diameter of the circle is
A) 5 cm B) 8 cm
C) 10 cm D) 7 cm
Answer : (C)
162. A pole 6 m in height cast a shadow 4 m long
at a time when the shadow of a tree measures 16m. The height of the tree is
A) 18 m B) 24 m
C) 30 m D) 36 m
Answer : (B)
163. The ratio of two numbers is 2:3. Their sum
is 60. The numbers are
A) 20,40 B) 24, 36
C) 30, 30 D) 25, 35
Answer : (B)
164. What is the principal amount which earns
Rs.132 as compound interest for second year with 10% interest per annum?
A) Rs. 1,200 B) Rs. 1,000
C) Rs. 12,000 D) Rs.
1,320
Answer : (B)
165. A person can buy 3 more copies of a book if
the shopkeeper reduces the price by 20% by paying Rs. 720. The original price
of the book is
A) Rs. 30 B) Rs. 45
C) Rs. 50 D) Rs. 60
Answer : (D)
166. A circle of radius 12 cm has its radius
decreased by 25%. The percentage decrease in its area is
A) 25 B) 37.5
C) 42.25 D) 43.75
Answer : (D)
167. A is 10 years older than B. x years ago, A
was twice as old as B. If B is 12 years old now, then x is
A) 1 B) 2
C) 3 D) 4
Answer : (B)
168. A persons work 4 hours per day and complete
a job in 4 days. If 8 persons work 8 hours per day, in how many days the job
will be completed?
A) 8 days B) 4 days
C) 3 days D) 16 day
Answer : (D)
169. A train passes a platform 60 metres long in
20 seconds and a man in 12 seconds. The speed of the train is
A) 18 km/ hr B) 27 km/hr
C) 36 km/hr D) 40 km / hr
Answer : (A)
170. The average age of students of a class is
15.8 years. The average age of boys in the class is 16.4 years and that of the
girls is 15.4 years. The ratio number of boys to the numbers of girls in the
class is
A) 1 : 2 B) 3 : 4
C) 3 : 5 D) 2 : 3
Answer : (B)
TNPSC Group I Exam-1997
171. A,B,C started a business with their
investment in the ratio 1 : 3 : 5. After 4 months, A invested the same amount
as before and B as well as C withdrew half of their investments. The ratio of
their profits as the end of the year was
A) 5 : 6 : 10 B) 6
: 5 : 10
C) 10 : 5 : 6 D) 4
: 3 : 5
Answer : (A)
172. A person borrows Rs. 2,500 at 10% Simple
Interest for 2 years and lends the money for the same period at the same rate
at Compound Interest. Then his gain is
A) Rs. 10 B) Rs. 15
C) Rs. 20 D) Rs. 25
Answer : (D)
173. (6.5 x 4.7) + (6.5 x 5.3) = ?
1.3 x 7.9 - 1.3 x 6.9
A) 3.9 B) 39
C) 34.45 D) 50
Answer : (D)
174. The cost of petrol per liter is Rs.20. In
the budget the coast is increased by 30%. After a week the revised cost is
decreased by 15%. The cost of the petrol per liter at present is
A) Rs. 23 B) Rs.
23.50
C) Rs. 22 D) Rs. 22.10
Answer : (D)
175. The mean age of group of 100 children is 10
years and the mean age of 25 them is 8 years and that of another 65 is 11
years. Then the mean age of the remaining 10 children is
A) 7.5 years B) 3.0 years
C) 8.5 years D) 9.0
years
Answer : (C)
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