Staff Selection Commission Sub Inspector Exam
Question : The given histogram shows the frequency distribution of the speed of cars passing through at a particular spot on a highway. Study the graph and answer the question that follows. What percentage of cars were running with a speed less than 70 km/h?
Option 1: 45.75 %
Option 2: 60 %
Option 3: 30 %
Option 4: 51.25 %
Correct Answer: 51.25 %
Solution : Total number of cars = 50 + 70 + 85 + 90 + 60 + 45 = 400 Total number of cars with speeds less than 70 km/h = 50 + 70 + 85 = 205 Percentage = ($\frac{\text{Part value}}{\text{Total value}}$) × 100 Percentage
Question : Directions: Sunita walks 45 metres towards the south, then turns right and walks another 45 metres. She then turns right and walks for 20 metres to reach point L. She then again turns to her right and walks for 45 metres. How far (in metres) is she from point L?
Option 1: 50 metres
Option 2: 45 metres
Option 3: 25 metres
Option 4: 60 metres
Correct Answer: 45 metres
Solution : Firstly, we will draw the diagram as per the given instructions –
Now, we have to find the distance between point L and the endpoint covered by Sunita.
The distance between point L and the endpoint = LM = 45 m
The distance between
Question : Directions: In this question, three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows/follow from the statements. Statements: All gowns are shirts. Some shirts are coats. All coats are clothes. Conclusions: I. Some gowns are clothes. II. Some clothes are shirts.
Option 1: Both conclusions I and II follow
Option 2: Neither conclusion I nor II follows
Option 3: Only conclusion II follows
Option 4: Only conclusion I follows
Correct Answer: Only conclusion II follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): Some gowns are clothes – From the Venn diagram, it is evident that there is no direct relation between gowns and clothes.
Question : Select the option that can be used as a one-word substitute for the given group of words. The one who makes maps and charts.
Option 1: Artist
Option 2: Cartographer
Option 3: Geographer
Option 4: Sculptor
Correct Answer: Cartographer
Solution : The correct choice is the second option.
A cartographer is a person who specialises in the creation of maps. They are skilled at representing geographical, political, geological, or other aspects of an area.
The meanings of the other options are as follows:
Question : Directions: In the following question, some parts of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error".
I would (1) / rather to (2) / die than beg. (3) / No Error (4)
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 2
Solution : The error lies in the second part of the sentence.
There is an error in the use of the infinitive form in the sentence. The word "to" is not needed after "rather" in this context. The correct structure after "rather" is to use the base
Question : Birds that can swim in water have:
Option 1: webbed feet
Option 2: broad wings
Option 3: long beaks
Option 4: toes with claws
Correct Answer: webbed feet
Solution : The correct answer is webbed feet.
One of the characteristics that water birds possess is webbed feet. These birds do go inside but float on the surface of the water. Some well-known examples are ducks, swans, penguins, etc.
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. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (15, 21, 66); (9, 17, 44)
Option 1: (2, 4, 12)
Option 2: (5, 37, 52)
Option 3: (7, 9, 86)
Option 4: (11, 13, 35)
Correct Answer: (5, 37, 52)
Solution : Given: (15, 21, 66); (9, 17, 44)
Like, (15, 21, 66)→(15 × 3) + 21 = 45 + 21 = 66 (9, 17, 44)→(9 × 3) + 17 = 27 + 17 = 44
Let's check the options – First option: (2, 4,
Question : Directions: Which figure best represents the relationship between Religious place, Mosque, and Temple?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Both temples and mosques are religious places of worship for Hindus and Muslims. So, the circle of temples and mosques will lie under the circle of religious places but will not intersect with each other.
The Venn diagram is –
Hence, the third option is correct.
Question : Directions: In the following question a series is given, with one number missing. Select the missing number from the given series. 1, 4, 15, 64, ?
Option 1: 285
Option 2: 315
Option 3: 325
Option 4: 375
Correct Answer: 325
Solution : Given: 1, 4, 15, 64, ?
Multiply and add the natural numbers starting from 2 to the previous term to get the next term of the series – (1 × 2) + 2 = 4; (4 × 3) + 3 = 15; (15 × 4)
Question : Observing the motion of objects on an inclined plane______deduced that objects move with a constant speed when no force acts on them.
Option 1: Michael Faraday
Option 2: Johannes Kepler
Option 3: Galileo
Option 4: Archimedes
Correct Answer: Galileo
Solution : The correct answer is Galileo.
Galileo, by studying the motion of objects on an inclined plane, concluded that objects move at a constant speed in the absence of external forces. Notably, he observed that when a marble rolls down an inclined plane, its velocity increases
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