Staff Selection Commission Sub Inspector Exam
Question : Directions: Four sets of numbers are given out of which three are alike in a certain way and one is different. Select the set of numbers that is different from the rest.
Option 1: 5 – 25 – 225
Option 2: 6 – 36 – 216
Option 3: 9 – 81 – 729
Option 4: 3 – 9 – 27
Correct Answer: 5 – 25 – 225
Solution : Let's check each option – First option: 5 – 25 – 225; (5)2 = 25; (5)3 = 125 ≠ 225 Second option: 6 – 36 – 216; (6)2 = 36; (6)3 = 216 Third option: 9 –
Question : Grassroots democracy is related to
Option 1: devolution of powers
Option 2: decentralisation of powers
Option 3: Panchayati Raj System
Option 4: all of the above
Correct Answer: all of the above
Solution : The correct answer is all of the above.
Local government involvement is referred to as grassroots governance. Key elements of democracy include decentralisation of power and enabling local government for the benefit of the people. The Panchayati Raj System, devolution of
Question : Dihing and Lohit are rivers in which of the following regions?
Option 1: Sikkim and Manipur
Option 2: Punjab and Himachal
Option 3: Arunachal Pradesh and Assam
Option 4: Jammu and Kashmir
Correct Answer: Arunachal Pradesh and Assam
Solution : The correct answer is Arunachal Pradesh and Assam.
The Lohit River, named after the Assamese term "Lohit", meaning blood, is a river flowing through both China and India. Known as Zayul Chu by the Tibetans and Tellu by the Mishmis, it
Question : The fourth proportional to 0.3, 0.8 and 0.108 is:
Option 1: 0.144
Option 2: 0.124
Option 3: 0.288
Option 4: 0.482
Correct Answer: 0.288
Solution : Given: The numbers = 0.3, 0.8 and 0.108 Let the fourth proportion be $x$. We know that, If $a ∶ b = c ∶ d$; then $d$ is called the fourth proportional to $a, b,$ and $c$ ⇒ $\frac{a}{b}=\frac{c}{d}$ ⇒ $\frac{0.3}{0.8}=\frac{0.108}{x}$ ⇒ $x=\frac{0.108\times0.8}{0.3}$ ⇒ $x=\frac{0.108\times0.8}{0.3}$
Question : Directions: Which of the following pairs of numbers and signs, when their positions are interchanged, will correctly solve the given mathematical equation? 17 × 15 + 3 – 11 ÷ 3 = 45
Option 1: 15 and 11, – and ×
Option 2: 15 and 11, + and ×
Option 3: 17 and 3, – and ÷
Option 4: 15 and 11, + and –
Correct Answer: 15 and 11, + and ×
Solution : Given: 17 × 15 + 3 – 11 ÷ 3 = 45
Interchanging the mathematical operations and numbers according to the given options to make the equation correct. First option: 15 and 11, – and × 17 – 11 +
Question : The given histogram represents the frequency distribution of average runs scored by 50 selected players from a district in a local cricket tournament.
What is the overall average score of the 50 players?
Option 1: 29.3
Option 2: 38.5
Option 3: 32.6
Option 4: 37.1
Correct Answer: 37.1
Solution : The sum of runs scored by all 50 players = $\frac{10.5+20.5}{2}\times 6 + \frac{20.5+30.5}{2} \times 10 + \frac{30.5+40.5}{2} \times 12 + \frac{40.5+50.5}{2} \times 16 + \frac{50.5+60.5}{2} \times 4 + \frac{60.5+70.5}{2} \times 2$ = $\frac{31}{2}\times 6 + \frac{51}{2} \times 10 + \frac{71}{2} \times 12 + \frac{91}{2}
Question : A supermarket offers the following discount schemes for buyers. I. Two successive discounts of 25% and 15% II. Successive discounts of 35% and 5% III. A discount of 38% Which offer is better for the customer?
Option 1: Either I or III
Option 2: Only I
Option 3: Only II
Option 4: Only III
Correct Answer: Only II
Solution : I. For the first scheme, two successive discounts of 25% and 15%: So, the equivalent discount $= 25 + 15 - \frac{25 \times 15}{100} = 36.25$% II. For the second scheme, successive discounts of 35% and 5%: So, the equivalent discount $= 35 +
Question : Directions: A and B are brothers. C and D are sisters. A's son is D's brother. How is B related to D?
Option 1: Father
Option 2: Brother
Option 3: Uncle
Option 4: Son
Correct Answer: Uncle
Solution : As per the given information, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.
So, B is the uncle of D. Hence, the third option is correct.
Question : According to the 2011 Census, which state recorded the lowest literacy rate?
Option 1: Arunachal Pradesh
Option 2: Bihar
Option 3: Andhra Pradesh
Option 4: Jharkhand
Correct Answer: Bihar
Solution : The correct answer is Bihar
As of the 2011 Census, India's overall literacy rate was 74.04%. Breaking it down, the male literacy rate is higher at 82.14%, while the female literacy rate is comparatively lower at 65.46%. Notably, Bihar reports the country's lowest literacy rate
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 close to the mirror in the reflection. So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line AB). So, the left side of the
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