Staff Selection Commission Sub Inspector Exam
Question : Directions: In the following question which answer figure will complete the pattern in the question figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the given figure – In column one: The Arrow is rotated by 90° in a clockwise direction and the number of arrows has been increased by 1 in each row. In column two: The Arrow is rotated by 90° in an anticlockwise direction and
Question : Select the most appropriate ANTONYM of the given word.
DISHEARTEN
Option 1: humble
Option 2: encourage
Option 3: indispose
Option 4: dampen
Correct Answer: encourage
Solution : The correct option is the second option.
Explanation: The word dishearten means to cause someone to lose determination or confidence, while encourage means to give support, confidence, or hope. In the context of antonyms, encourage is the opposite of dishearten, as it implies providing
Question : If each side of a rectangle is decreased by 11%, then its area will decrease by:
Option 1: 25%
Option 2: 21.13%
Option 3: 24.31%
Option 4: 20.79%
Correct Answer: 20.79%
Solution : Let the original length = 100, original breadth = 100 We know the area of a rectangle = Length × Breadth So, original Area = 100 × 100 = 10000 Reduced length = 89, reduced breadth = 89 So, new area = 89 × 89
Question : Directions: Based on the position in the English alphabetical order, three of the following letter clusters are alike in some manner and one is different. Select the odd letter cluster.
Option 1: XUSO
Option 2: NKHE
Option 3: MJGD
Option 4: WTQN
Correct Answer: XUSO
Solution : Let's check each option – First option: XUSO; X – 3 = U; U – 2 = S; S – 4 = O Second option: NKHE; N – 3 = K; K – 3 = H; H – 3 = E Third option: MJGD; M
Question : Which is the largest among the numbers $\sqrt{5},\ 3\sqrt{7}$, and $4\sqrt{13}$.
Option 1: $\sqrt{5}$
Option 2: $3\sqrt{7}$
Option 3: $4\sqrt{13}$
Option 4: $\text {All are equal}$
Correct Answer: $4\sqrt{13}$
Solution : To find: The largest among the numbers $\sqrt{5},\ 3\sqrt{7}$, and $4\sqrt{13}$. Here, $\sqrt{5}=\sqrt{5}$ $3\sqrt{7}=\sqrt{3×3×7}=\sqrt{63}$ $4\sqrt{13}=\sqrt{4×4×13}=\sqrt{208}$ Hence, the correct number is $4\sqrt{13}$.
Question : Rama mixes 20% of kerosene into petrol and then he sells the whole mixture at the price of petrol. If the cost price of the kerosene is 40% of the cost price of petrol. Then what is his net profit %?
Option 1: 11.11%
Option 2: 11.5%
Option 3: 12.5%
Option 4: 9.5%
Correct Answer: 11.11%
Solution : Cost price (CP) of 1 litre petrol = Rs. 100 CP of 1 litre kerosene is 40% of the CP of petrol = Rs. 40 In 1 litre petrol, quantity of kerosene mixed = 20% of 1000 ml = 200 ml The price of 1
Question : Comprehension: Read the given passage and answer the questions that follow.
Ghana was the first true African state. The reason why we are saying this is that most African states lived in tribal villages but Ghana was the centre of the gold trade. This gold trade opened new possibilities for the Ghanaians. The gold trade roots back to the 4th century, when African Soninke tribes were under the rule of the Maga, a Berber clan originating from Morocco. This clan has mastered trans-Saharan camel travel. They were known for trading salt for gold from the Soninke.
When the Arabs invaded North Africa, there was an upsurge in the trade in gold. Ghana became rich and soon after, the Soninke ousted the Maga and built their own nation under Kaya Magan Cisse, who became the Soninke king around 790.
Ghana’s ancient capital, Koumbi Salah, was the city where Africans and Berbers met and traded. Arab traders in the 9th century described Ghana as ‘the land of gold.’ The gold came from Asante and Senegal to the south and west. The trade routes led north and east to Morocco, Libya Aksum and so on to Europe and Asia.
Ghana had reached its peak in the 10th century. This was the country which controlled both the gold and salt trades. Other trading goods included woollen clothes, luxury items, leather goods and slaves. Traders transported goods hundreds of kilometres across the Sahara Desert with camel caravans.
Question: Select the one-word substitute from the passage for the given group of words. Rapid or sudden rise
Option 1: Caravans
Option 2: Ousted
Option 3: Upsurge
Option 4: Ancient
Correct Answer: Upsurge
Solution : The correct choice is the third option.
In the context of the passage, the term upsurge is used to describe a sudden and significant increase in the trade in gold when the Arabs invaded North Africa. Specifically, the passage states: "When the Arabs invaded North
Question : Directions: In the following question a series is given, with one number missing. Select the missing number from the given series. 3, 10, 31, 94, ?
Option 1: 197
Option 2: 127
Option 3: 283
Option 4: 317
Correct Answer: 283
Solution : Given: 3, 10, 31, 94, ?
Multiply each term in the series by 3 and then add 1 to the resultant to get the missing term. (3 × 3) + 1 = 10; (10 × 3) + 1 = 31; (31 × 3) + 1
Question : What percentage of Earth’s water is fresh?
Option 1: 4.8 per cent
Option 2: 5.2 per cent
Option 3: 3.9 per cent
Option 4: 2.7 per cent
Correct Answer: 2.7 per cent
Solution : The correct answer is 2.7 per cent.
Around 2.7 per cent of the Earth’s water is fresh, and the maximum of this freshwater is found in ice and groundwater form. The majority of the total water present on the Earth is found in
Question : The difference between a discount of 30% on INR 5,000 and two successive discounts of 15% and 25% on the same amount is:
Option 1: INR 315.50
Option 2: INR 350.50
Option 3: INR 312.50
Option 4: INR 412.50
Correct Answer: INR 312.50
Solution : Single equivalent discount = $(a+b-\frac{a×b}{100}$)%, where $a=15\%$ and $b=25\%$ are successive discounts. $=15+25-\frac{15\times 25}{100}=40-3.75=36.25\%$ The required difference $=\frac{36.25-30}{100}\times 5000=\frac{6.25}{100}\times 5000=$ INR 312.50 Hence, the correct answer is INR 312.50.
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