Staff Selection Commission Sub Inspector Exam
Question : P and Q can do a piece of work in 14 days. Q and R together can do it in 21 days. If P is twice as good a workman as R, then in how many days Q alone can do the work?
Option 1: 42 days
Option 2: 40 days
Option 3: 35 days
Option 4: 38 days
Correct Answer: 42 days
Solution :
Given: Number of days P and Q take to do a piece of work = 14 days Number of days Q and R take to do a work = 21 days P is twice as good as Workman as R Let P, Q, and
Question : Directions: Six friends are sitting in a circle and facing the centre of the circle. Runa, Charu, and Pari are females. Varun, Manu and Prakash are males. Manu is between Varun and Prakash, and Charu is between Pari and Runa. Varun and Pari are opposite to each other. The person sitting to the right of Runa is male. Who is sitting immediately right to Prakash?
Option 1: Manu
Option 2: Charu
Option 3: Pari
Option 4: Varun
Correct Answer: Pari
Solution : Given: (I) Runa, Charu, and Pari are females. Varun, Manu and Prakash are males. Charu is between Pari and Runa. Varun and Pari are opposite to each other. The person sitting to the right of Runa is male.
(II) Manu is between Varun and Prakash.
Question : A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of water in litres to be mixed with each litre of milk to get a 25% profit is:
Option 1: $\frac{1}{4}$ litre
Option 2: $\frac{1}{5}$ litre
Option 3: $1\frac{1}{4}$ litre
Option 4: Cannot be calculated without knowing the cost price of milk.
Correct Answer: $\frac{1}{5}$ litre
Solution : Let the cost price (CP) of 1 litre of milk be Re. 1. So, the selling price (SP) of 1 litre of the mixture is Re. 1. To get a 25% profit, the CP of 1 litre of the mixture = $\frac{100}{125}$ × 1
Question : Article 60 of the Indian Constitution refers to:
Option 1: election of the President of India
Option 2: oath of the president
Option 3: impeachment of the president
Option 4: Vice President of India
Correct Answer: oath of the president
Solution : The correct option is the oath of the president.
Article 60 of the Indian Constitution deals with the "oath of office by the president". It outlines the oath or affirmation that the president takes before entering the office. Article 54 of
Question : Directions: In this question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2) and (3) which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (4).
He is looking for a flat for his son of 1200 sq feet carpet area.
(1) He is looking for a flat of 1200 sq feet carpet area for his son.
(2) he of 1200 sq feet carpet area is looking for a flat for his son.
(3) Of 1200 sq feet carpet area he is looking for a flat for his son.
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The correct choice is the first option.
Explanation:
The original sentence has a word order issue. It's not clear whether the "1200 sq feet carpet area" is for the "flat" or for "his son". The correct word order should be subject + verb +
Question : What is the LCM of $a^3b-ab^3,a^3b^2-a^2b^3, ab(a-b)$?
Option 1: $a^2 b^2\left(a^2+b^2\right)$
Option 2: $a^2 b^2\left(a^2-b^2\right)$
Option 3: $a^2 b^3\left(a^2+b^2\right)$
Option 4: $a^3 b^2\left(a^2-b^2\right)$
Correct Answer: $a^2 b^2\left(a^2-b^2\right)$
Solution : To find the LCM of the given expressions, we first factorize them: 1. $a^3b-ab^3 = ab(a^2-b^2) = ab(a-b)(a+b)$ 2. $a^3b^2-a^2b^3 = a^2b^2(a-b)$ 3. $ab(a-b)$ Now, the LCM of these expressions is the product of the highest powers of all factors present in any of
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
Mr. Clarke (had staying) here since 2005 and has made India his home.
(1) was to stay
(2) is staying
(3) has been staying
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 3
Solution : The correct choice is the third option.
The sentence describes an ongoing action that started in the past and continues up to the present. The present perfect continuous tense "has been staying" is appropriate in this context.
Therefore, the correct sentence should be: "Mr. Clarke
Question : The population of four villages in 4 years is presented in the following table.
What is the percentage increment in the population of village A in 2021 as compared to the population in the year 2018? (Correct up to two decimal places.)
Option 1: 8.07
Option 2: 7.07
Option 3: 6.89
Option 4: 9.63
Correct Answer: 7.07
Solution : The population of the village A in 2018 = 12381 The population of the village A in 2021 = 13256 The required percentage increment in the population = $\frac{\text{Difference in population}}{\text{Original population}}×100$ = $\frac{13256-12381}{12381}×100$ = $\frac{875}{12381}×100$ = 7.07 Hence, the correct answer is 7.07.
Question : Who among the following was the last Mauryan ruler and was killed by his commander-in-chief?
Option 1: Shatadhanvan
Option 2: Bindusara
Option 3: Brihadratha
Option 4: Dasharatha
Correct Answer: Brihadratha
Solution : The correct answer is Brihadratha.
The last ruler of the Maurya Empire was Brihadratha. He was killed by his commander-in-chief, Pushyamitra Shunga, in 187 BC. Pushyamitra Shunga established his kingdom of the Shunga dynasty.
Question : Directions: In the following question, some parts of the sentence may have some 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".
The news (1) / I have received (2) / is not good. (3) / No error (4)
Correct Answer: (4)
Solution : The correct choice is the fourth option.
The sentence has no error since the subject is in agreement with the verb. "News" is considered a singular countable noun and thus is followed by the singular verb.
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