Staff Selection Commission Sub Inspector Exam
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.) (82, 75, 66) (69, 62, 53)
Option 1: (21, 16, 9)
Option 2: (49, 52, 35)
Option 3: (61, 54, 45)
Option 4: (36, 28, 21)
Correct Answer: (61, 54, 45)
Solution : Given: (82, 75, 66); (69, 62, 53)
The pattern is as follows – (82, 75, 66)→82 – 75 = 7; 75 – 66 = 9 (69, 62, 53)→69 – 62 = 7; 62 – 53 = 9
Let's check the options – First
Question : Which of the following is the method of heat transfer?
Option 1: Convection
Option 2: Evaporation
Option 3: Revolution
Option 4: Thermal Expansion
Correct Answer: Convection
Solution : The correct option is Convection.
Convection is transferring heat in a fluid (liquid or gas) in which hotter and less dense material rises and colder and denser material sinks, resulting in a circular flow pattern. This phenomenon arises as temperature and density change within the
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 159, 146, ?, 120, 107, 94, 81
Option 1: 136
Option 2: 131
Option 3: 133
Option 4: 140
Correct Answer: 133
Solution : Given: 159, 146, ?, 120, 107, 94, 81
Subtract 13 from each number to obtain the next number. 159 – 13 = 146; 146 – 13 = 133; 133 – 13 = 120; 120 – 13 = 107; 107 – 13 = 94; 94 –
Question : In a journey of three unequal laps, a car covers a distance of 200 km in 4 hr in the first lap, while another 162 km at the speed of 15 m/s in the second lap. It covered the remaining distance of the final lap in 4 hr such that the average speed of the car for the entire journey was 50 km/hr. What was the speed of the car on the third lap of the journey?
Option 1: 47 km/hr
Option 2: 52 km/hr
Option 3: 42 km/hr
Option 4: 45 km/hr
Correct Answer: 47 km/hr
Solution : The concept used here is that the average speed is the total distance travelled divided by the total time taken. Speed in the second lap = 15 m/s = $\frac{15×18}{5}$ km/hr = 54 km/hr Time taken in second lap = $\frac{162}{54}$ hrs = 3
Question : Select the most appropriate meaning of the underlined word. Ram was abandoned by his parents at a very early age.
Option 1: Loved
Option 2: Left
Option 3: Hated
Option 4: Disgraced
Correct Answer: Left
Solution : The correct choice is the second option.
Explanation: In the context of the sentence "Ram was abandoned by his parents at a very early age," the words abandoned and the word left are used interchangeably. Both convey the idea that Ram's parents departed
Question : Directions: My friend and I started simultaneously towards each other from two places 100 m apart. After walking 30 m, my friend turns left and goes 10 m, then he turns right and goes 20 m and then turns right again and comes back to the road on which he had started walking. If we walk at the same speed, what is the distance between us at this point?
Option 1: 50 m
Option 2: 20 m
Option 3: 30 m
Option 4: 40 m
Correct Answer: 20 m
Solution : Firstly, we will draw the diagram as per the given instructions –
In the above figure, the friend is denoted by A and I is denoted by F. Here, AF = 100 m; CD = BE = 20 m Total distance covered by a
Question : Which Union Territory recorded the highest male literacy rate, according to the 2011 Census?
Option 1: Daman and Diu
Option 2: Delhi
Option 3: Andaman and Nicobar Islands
Option 4: Lakshadweep
Correct Answer: Lakshadweep
Solution : The correct answer is Lakshadweep.
According to the Census 2011, Lakshadweep recorded the highest male literacy rate in the Union territory of India. The male literacy of Lakshadweep is 95.56% and the female literacy of Lakshadweep is 87.95%. The overall literacy percentage of Lakshadweep
Question : What is the selling price of a dress that has a marked price of Rs. 500 and is given a 20% discount and subsequently a 10% discount?
Option 1: Rs. 330
Option 2: Rs. 360
Option 3: Rs. 365
Option 4: Rs. 345
Correct Answer: Rs. 360
Solution : Given: Marked price = Rs. 500 1st discount($x$) = 20% 2nd discount($y$) = 10% $\therefore$ Effective discount = $x + y - \frac{xy}{100}=20 + 10 - \frac{200}{100}= 28\%$ Now, the selling price = $500×\frac{100-28}{100}$ = Rs. 360 Hence, the correct answer is Rs. 360.
Question : In the following sentence, four words are underlined, out of which one word is incorrectly spelt. Identify the INCORRECTLY spelt word. The ruins of many structures that still stand tall in their granduer are testimony to the fact that Mewar was not only the land of the courageous.
Option 1: testimony
Option 2: courageous
Option 3: granduer
Option 4: ruins
Correct Answer: granduer
Solution : The third option is correct.
Explanation: The incorrectly spelled word in the sentence is granduer, as the place of the vowel "u" and "e" should be interchanged. Hence, the correct spelling is grandeur. The word in question is intended to be grandeur, which
Question : Directions: Select the option that is related to the fourth term in the same way as the first term is related to the second term and the fifth term is related to the sixth term. 5 : 24 :: ? : 143 :: 4 : 15
Option 1: 7
Option 2: 12
Option 3: 8
Option 4: 11
Correct Answer: 12
Solution : Given: 5 : 24 :: ? : 143 :: 4 : 15
Subtract 1 from the square of the first number to get the second number – Like, 5 : 24→52 – 1 = 24 And, 4 : 15→42 – 1 = 15
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