Staff Selection Commission Sub Inspector Exam
Question : The price of the table depreciates every year by 20%. If the value of the table after 2 years will be Rs. 32,000, then what is the present price (in Rs.) of the table?
Option 1: 48,000
Option 2: 44,000
Option 3: 50,000
Option 4: 51,000
Correct Answer: 50,000
Solution : Let the present value be $x$. Value after 2 years = $x × (1-\frac{R}{100})^2$, where $R$ is the rate. $32000 = x × (1-\frac{20}{100})^2$ ⇒ $32000 = x × (\frac{4}{5})^2$ ⇒ $32000 = x × (0.8)^2$ ⇒ $x = \frac{32000}{0.64}$ $\therefore x= 50,000$ Present value
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the given 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.) (11, 10, 21) (14, 6, 160)
Option 1: (16, 9, 165)
Option 2: (19, 12, 217)
Option 3: (81, 16, 65)
Option 4: (27, 18, 9)
Correct Answer: (19, 12, 217)
Solution : Given: (11, 10, 21); (14, 6, 160)
Here, (11, 10, 21)→(11)2 – (10)2 = 121 – 100 = 21 (14, 6, 160)→(14)2 – (6)2 = 196 – 36 = 160
Let's check the options – First option: (16, 9,
Question : Who was the 1st President of South Africa after apartheid?
Option 1: Zuma
Option 2: Nelson Mandela
Option 3: Kofi Annan
Option 4: Booker T. Washington
Correct Answer: Nelson Mandela
Solution : The correct answer is Nelson Mandela
Apartheid, a doctrine in South Africa, advocated for the separation of white people from non-white populations, enforcing racial segregation. Nelson Mandela emerged as a prominent opponent of this ideology and later assumed the role of South Africa's president
Question : Directions: Which option represents the correct order of the given words as they would appear in the English dictionary? 1. Method 2. Methanol 3. Metrics 4. Metro 5. Melody
Option 1: 5, 2, 1, 3, 4
Option 2: 5, 3, 1, 2, 4
Option 3: 5, 2, 1, 4, 3
Option 4: 5, 1, 2, 4, 3
Correct Answer: 5, 2, 1, 3, 4
Solution : Given:
1. Method 2. Methanol 3. Metrics 4. Metro 5. Melody
Step 1: The first two letters of each word are the same. Step 2: The third letter of each word is either t or l. Based on the alphabetical
Question : Directions: In the following question, select the number that can be placed at the sign of the question mark (?) from the given alternatives.
Option 1: 12
Option 2: 24
Option 3: 26
Option 4: 29
Correct Answer: 29
Solution : Multiply the numbers of column one, column two, and column three and add 5 to the resultant to get the number in column four.
In the first row: (1 × 4 × 2) + 5 = 8 + 5 = 13 In the second row:
Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer.
Rita is more beautiful than _______ of her sisters.
Option 1: any other
Option 2: any
Option 3: some
Option 4: all
Correct Answer: all
Solution : The fourth option is the correct choice.
It expresses that Rita is more beautiful than every one of her sisters, capturing the intended meaning of the comparison.
Therefore, the complete sentence is: Rita is more beautiful than all of her sisters.
Question : What is the chemical formula of "quartz"?
Option 1: SiO3
Option 2: SiO5
Option 3: SiO
Option 4: SiO2
Correct Answer: SiO2
Solution : The correct answer is SiO2.
The chemical formula of quartz is SiO2. It consists of silicon (Si) and oxygen (O) atoms. Quartz is a common mineral in the Earth's crust and is one of the most abundant minerals. It has
Question : Directions: In a certain code language, good morning is coded as mu du, early morning tea is coded as du tu se, and tea is early is coded as se re tu. What is the code for the word is?
Option 1: mu
Option 2: tu
Option 3: du
Option 4: re
Correct Answer: re
Solution : Given: 1. good morning ⇒ mu du 2. early morning tea ⇒ du tu se 3. tea is early ⇒ se re tu
By comparing all the above–coded sentences, we find that – In sentences 1 and 2, morning and du are common. In sentences
Question : Select the most appropriate idiom for the given situation, focusing on the underlined segment. I know every detail of his accident because I heard the facts directly from him.
Option 1: Speak of the devil
Option 2: Get something out of your system
Option 3: Pour one’s heart out
Option 4: Straight from horse’s mouth
Correct Answer: Straight from horse’s mouth
Solution : The correct answer is the fourth option.
This idiom means to get information directly from the most reliable or authoritative source. In the context of the sentence, the speaker heard the details of the accident directly from the person involved, making the
Question : Directions: If a mirror is placed on line AB, then which of the answer figures is the right image of the given figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. Here, according to the information provided, the mirror is placed at the bottom of the figure (on line AB). So, the top of the reflected image will appear as the
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