Staff Selection Commission Sub Inspector Exam
Question : Study the given table and answer the question that follows. The table shows the production of five types of cars P, Q, R, S and T by a company from the year 1989 to 1994.
During the period 1989-94, which type of car featured a continuous decrease in production?
Option 1: S
Option 2: Q
Option 3: R
Option 4: T
Correct Answer: R
Solution : Using the given graph from the years 1989 to 94: Q = 16 > 10 < 14 > 12 = 12 < 14 R = 21 > 17 > 16 > 15 > 13 > 8 S = 4 < 6 <10 < 16 <
Question :
Bacteriophage was discovered by
Option 1:
Felix d’Herelle and Frederick Twort
Option 2:
A.J. Kluyver and van Niel
Option 3: Paul R Ehrlich
Option 4: Burrill and Smith
Correct Answer:
Solution : The correct answer is Felix d’Herelle and Frederick Twort.
Bacteriophage is a virus that destroys bacteria. The term bacteriophage was coined by Felix d'Herelle in 1918 and was found by Felix d’Herelle and Frederick Twort in the year 1915. Bacteriophage
Question : Directions: Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 16 : 128 :: 18 : 162 :: 22 : ?
Option 1: 246
Option 2: 242
Option 3: 88
Option 4: 484
Correct Answer: 242
Solution : Given: 16 : 128 :: 18 : 162 :: 22 : ?
Like, 16 : 128→16 × (16 ÷ 2) = 16 × 8 = 128 18 : 162→18 × (18 ÷ 2) = 18 × 9 = 162 Similarly, for 22 : ?→22 ×
Question : The ratio of the two numbers is 5 : 7 and their HCF is 3. Their LCM is:
Option 1: 75
Option 2: 105
Option 3: 125
Option 4: 35
Correct Answer: 105
Solution : The two numbers are in the ratio 5 : 7, and their highest common factor (HCF) is 3. Therefore, the numbers are 5 × 3 = 15 and 7 × 3 = 21. The least common multiple (LCM) of two numbers is given by the
Question : Directions: Select the option in which the numbers do not share the same relationship as that shared by the given pair of numbers. (23, 115, 207)
Option 1: (16, 80, 144)
Option 2: (21, 105, 189)
Option 3: (8, 35, 72)
Option 4: (6, 30, 54)
Correct Answer: (8, 35, 72)
Solution : Given: (23, 115, 207)
Here, 23 × 5 = 115; 23 × 9 = 207
Let's check the options – First option: (16, 80, 144); 16 × 5 = 80; 16 × 9 = 144 Second option: (21, 105, 189); 21 × 5
Question : Directions: Based on the position in the English alphabetical order, three of the following letter clusters are alike in some manner and one is different. Select the odd letter cluster.
Option 1: LNSV
Option 2: FHMP
Option 3: BDIL
Option 4: JLPT
Correct Answer: JLPT
Solution : Let's check each option – First option: LNSV; L+ 2 = N; N + 5 = S; S + 3 = V Second option: FHMP; F + 2 = H; H + 5 = M; M + 3 = P Third option: BDIL; B
Question : The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$. The ratio of their volumes will be:
Option 1: $9:4$
Option 2: $20:27$
Option 3: $4:9$
Option 4: $27:20$
Correct Answer: $20:27$
Solution : Given: The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$. Let the radii of the first cylinder = $2r$ units So, the radii of the second cylinder = $3r$ units Also, let their heights be $5h$
Question : A moneylender claims to lend money at the rate of 10% per annum simple interest. However, he takes the interest in advance when he lends a sum for one year. At what interest rate does he lend the money?
Option 1: $10$%
Option 2: $10\frac{1}{9}$%
Option 3: $11$%
Option 4: $11\frac{1}{9}$%
Correct Answer: $11\frac{1}{9}$%
Solution : Given: Rate = 10% Let the amount lent be Rs. 100. Interest =10% of 100 = Rs. 10 Actual amount = 100 – 10 = Rs. 90 Actual rate = $10×\frac{100}{90}=11\frac{1}{9}$% Hence, the correct answer is $11\frac{1}{9}$%.
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed.) (6, 12, 228) (8, 3, 515)
Option 1: (3, 28, 56)
Option 2: (13, 11, 172)
Option 3: (4, 18, 82)
Option 4: (9, 23, 119)
Correct Answer: (4, 18, 82)
Solution : Given: (6, 12, 228); (8, 3, 515)
Here, (6, 12, 228)→(6)3 + 12 = 216 + 12 = 228 (8, 3, 515)→(8)3 + 3 = 512 + 3 = 515
Let's check the options – First option: (3, 28, 56)→(3)3
Question : Select the most appropriate meaning of the given idiom. Go round in circles
Option 1: Be forced to explain your actions and probably be punished
Option 2: Make no progress in an argument or discussion
Option 3: Become very confused when you are trying to explain something
Option 4: Believe something good about someone even though you could believe either good or bad
Correct Answer: Make no progress in an argument or discussion
Solution : The correct option is the second option.
Explanation: This idiom refers to a situation where people keep discussing or debating a topic without reaching a conclusion or making any progress. It's like going in circles, covering the same
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