Staff Selection Commission Combined Graduate Level Exam
Question : If the LCM and the HCF of two numbers are 12 and 2 respectively, then find the mean proportional of these numbers.
Option 1: $2 \sqrt{6}$
Option 2: $\sqrt{14}$
Option 3: $2$
Option 4: $\sqrt{6}$
Correct Answer: $2 \sqrt{6}$
Solution : We know that LCM × HCF = Product of two numbers Now Mean proportion = $\sqrt{\text{Product of two numbers}}$ Given: LCM = 12 HCF = 2 $\therefore$ Product of two numbers $= 12 \times 2 = 24$ Mean proportion $=\sqrt{24} = \sqrt{4\times 6}=2\sqrt{6}$ Hence
Question : Direction: In the following question, select the one which is different from the other three alternatives.
Option 1: 13 - 21
Option 2: 19 - 27
Option 3: 15 - 23
Option 4: 16 - 24
Correct Answer: 16 - 24
Solution : Let's check the options —
First option: 13 - 21; Both 13 and 21 are odd numbers.
Second option: 19 - 27; Both 19 and 27 are odd numbers.
Third option: 15 - 23; Both 15 and 23 are odd numbers.
Fourth option:
Question : Who Discovered cement?
Option 1: Agasslt
Option 2: Albertus Magnus
Option 3: Joseph Aspdin
Option 4: Janseen
Correct Answer: Joseph Aspdin
Solution : The correct answer Joseph Aspdin
Joseph Aspdin was born in England in 1779. He is credited for the invention of cement and got the patent for portland cement. He was an English businessman, inventor and stonemason. While experimenting he found that when clay and
Question : Comprehension: In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank. Exploring new places is an exciting way to (1) ____ your horizons and experience different cultures. Whether you prefer to travel by different modes of transportation like boat or aeroplane, there are many ways to get around and see the world. One of the benefits of exploring new places is the (2) _____ to try new foods and cuisines. You can also visit famous landmarks, attend cultural events, and meet people from all walks of life. When travelling, it's important to (3) _____ calm and flexible. Unexpected delays and changes can happen, so it's helpful to have a backup plan and be willing to adapt. Another important (4) _____ of travel is sustainability. By being mindful of your impact on the environment and local communities, you can travel in a responsible and sustainable way. With so many (5) _____, the world is yours to explore. Select the most appropriate option to fill in the blank number 1.
Option 1: constrict
Option 2: broaden
Option 3: localise
Option 4: contract
Correct Answer: broaden
Solution : The correct choice is the second option.
Explanation:
Constrict means to make narrower or tighten, which is the opposite of what is intended.
Localise means to confine to a particular place, which is not the intended meaning.
Contract means to make smaller or shrink, which
Question : Which was the only Indus site with an artificial brick dockyard ?
Option 1:
Lothal
Option 2: Kalibangan
Option 3: Harappa
Option 4: Mohenjo Daro
Correct Answer:
Solution : Correct Answer is Lothal
Lothal was an important city in the ancient Indus Valley civilization. It was discovered in 1954 in the Bhal district of the present state of Gujarat and dates from 2400 BCE. The only Indus Valley site with an artificial brick dockyard
Question : Directions: In the following question, you have to identify the correct response from the given premises stated according to the following signs. If × means –, + means ×, ÷ means +, – means ÷, what will be the value of the given expression? 175 – 25 ÷ 5 + 20 × 3 + 10 = ?
Option 1: 77
Option 2: 160
Option 3: 240
Option 4: 2370
Correct Answer: 77
Solution : Given: × means –, + means ×, ÷ means +, – means ÷. 175 – 25 ÷ 5 + 20 × 3 + 10 = ?
Replace the signs in the given equation as per the instructions and solve the equation – = 175 ÷
Question : Directions: After arranging the given words according to dictionary order, which word will come in third position? 1. Chocolate 2. Chocoholic 3. Chocolaty 4. Chocolatier 5. Chock
Option 1: Chocolate
Option 2: Chock
Option 3: Chocolatier
Option 4: Chocoholic
Correct Answer: Chocolate
Solution : Given: 1. Chocolate 2. Chocoholic 3. Chocolaty 4. Chocolatier 5. Chock
Step 1: Compare the first letter of all the words. Since all the words start with the same letter C, then move on to the next letter. Step 2: The second, third, and
Question : Direction: If a number is greater than 5 but less than 9 and greater than 7 but less than 11, the number is?
Option 1: 5
Option 2: 6
Option 3: 7
Option 4: 8
Correct Answer: 8
Solution : Given:
Case I: Number is greater than 5 but less than 9 = 6, 7, 8 Case II: Number is greater than 7 but less than 11 = 8, 9, 10
Therefore, a common number from both cases = 8.
Hence, fourth option is
Question : The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)?
Option 1: 31.24
Option 2: 30.22
Option 3: 34.44
Option 4: 32.22
Correct Answer: 32.22
Solution : Given An average of 20 numbers = 32 Total of 32 numbers = 20 × 32 = 640 After removing 29 and 31 new total = 640 – (29 + 31) = 640 – 60 = 580 $\therefore$ New average = $\frac{580}{18}=32.22$ Hence, the correct
Question : Select the most appropriate meaning of the underlined idiom/phrase in the given sentence.
Today, the country's nationalists rule the roost and hand out the jobs.
Option 1: To be in charge
Option 2: To be prejudiced
Option 3: To save a criminal
Option 4: To exploit someone
Correct Answer: To be in charge
Solution : The most appropriate choice is the first option.
In the sentence, it suggests that the country's nationalists are in control and making decisions, particularly related to job assignments. Rule the roost is an idiom that means being in a dominant or controlling
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