Staff Selection Commission Combined Graduate Level Exam
Question : Direction: X goes 15 metres North, then turns right and walks 20 metres. then again turns right and walks 10 metres, then again turns right and walks 20 metres. How many metres has he travelled from his original position?
Option 1: 5 m
Option 2: 10 m
Option 3: 15 m
Option 4: 20 m
Correct Answer: 5 m
Solution : As per the given information, the movement of X will look as follows –
According to the above figure, the distance that X has traveled from his original position = AE = 5 m.
Hence, the first option is correct.
Question : Three bottles of equal capacity contain mixtures of milk and water in ratios 2 : 5, 3 : 4, and 4 : 5. These three bottles are emptied into a large bottle. What will be the ratio of milk and water respectively in the large bottle?
Option 1: 73 : 106
Option 2: 73 : 116
Option 3: 73 : 113
Option 4: 73 : 189
Correct Answer: 73 : 116
Solution : Let the capacity of each bottle be $x$ units. Bottle 1 has milk : water = 2 : 5 Bottle 2 has milk : water = 3 : 4 Bottle 3 has milk : water = 4 : 5 Bottle 1 contains milk = $\frac{2x}{7}$, water = $\frac{5x}{7}$ Bottle 2 contains milk = $\frac{3x}{7}$, water = $\frac{4x}{7}$ Bottle 3 contains milk = $\frac{4x}{9}$, water = $\frac{5x}{9}$ When mixed, the ratio of milk and water is: $= (\frac{2x}{7}+\frac{3x}{7}+\frac{4x}{9}) : (\frac{5x}{7}+\frac{4x}{7}+\frac{5x}{9})$ $= (\frac{18x+27x+28x}{63}) : (\frac{45x+36x+35x}{63})$ $= 73: 116$ Hence, the correct answer is 73 : 116.
Question : Amir Khusrau was a
Option 1: poet
Option 2: play writer
Option 3: painter
Option 4: architect
Correct Answer: poet
Solution : The correct answer is a poet.
Amir Khusrau was a famous poet, scholar, and musician in the Indian subcontinent during the 13th and 14th centuries. He was originally from Central Asia but spent most of his life in the Delhi Sultanate. Khusrau wrote extensively in Persian and is widely recognised for his contributions to the cultural, and literary heritage of the region.
Question : Directions: A # B means A is the brother of B; A @ B means A is the daughter of B; A & B means A is the husband of B; A % B means A is the wife of B. If D @ N @ H & Y @ F % V, then how is H related to D?
Option 1: Mother’s father
Option 2: Sister’s daughter
Option 3: Mother
Option 4: Daughter’s daughter
Correct Answer: Mother’s father
Solution : Given: A # B ⇒ A is the brother of B A @ B ⇒ A is the daughter of B A & B ⇒ A is the husband of B A % B ⇒ A is the wife of B
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, H is D's mother’s father (maternal grandfather). Hence, the first option is correct.
Question : Shivkumar Sharma is famous for playing the
Option 1: Sitar
Option 2: Flute
Option 3: Santoor
Option 4: Tabla
Correct Answer: Santoor
Solution : The correct option is Santoor
Pandit Shiv Kumar Sharma was born in 1938 in Jammu. He was a famous Indian musician and Santoor player. It is believed that it was hiim who first used Santoor and included it in Indian classical music. He partnered with Indian flautist Hariprasad Chaurasia and composed music for numerous Indian movies under the moniker Shiv-Hari.
Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 5, 9, 13, 17, ?, 25
Option 1: 27
Option 2: 23
Option 3: 21
Option 4: 19
Correct Answer: 21
Solution : Given: 5, 9, 13, 17, ?, 25
In the given series, add 4 to the previous term to get the next term. 5 + 4 = 9; 9 + 4 = 13; 13 + 4 = 17; 17 + 4 = 21; 21 + 4 = 25
So, the missing number is 21. Hence, the third option is correct.
Question : Hydrogen bomb is based on the principle of
Option 1: controlled fission reaction
Option 2: uncontrolled fission reaction
Option 3: controlled fusion reaction
Option 4: uncontrolled fusion reaction
Correct Answer: uncontrolled fusion reaction
Solution : The correct answer is uncontrolled fusion reaction.
The theory of uncontrolled nuclear fusion underpins a hydrogen bomb. The process by which the nuclei of two light atoms join to generate a new nucleus is known as nuclear fusion.
Question : A sum becomes Rs.15,500 in 7 years on simple interest at the rate of 30 percent per annum. What is the total interest for the 7 years?
Option 1: Rs. 12,200
Option 2: Rs. 1,47,000
Option 3: Rs. 10,500
Option 4: Rs. 11,500
Correct Answer: Rs. 10,500
Solution : Given, Sum= Rs. 15500 Rate of interest (r) = 30% per annum Time (t) = 7 years Let the principal be P. ⇒ [P + (simple interest)] = sum ⇒ [P + $\frac{\text{Prt}}{100}$] = sum ⇒ [P + $\frac{\text{P} × 30 × 7}{100}$] = 15500 ⇒ [P + $\frac{\text{P} × 210}{100}$] = 15500 ⇒ [P + $\frac{\text{21P}}{10}$] = 15500 ⇒ $\frac{31\text{P}}{10}$ = 15500 ⇒ P = $15500 × \frac{10}{31}$ ⇒ P = 5000 Simple interest = 15500 – 5000 = Rs. 10500 Hence, the correct answer is Rs. 10500.
Question : The total cost of a dishwasher and a vacuum cleaner was INR 78,750. The vacuum cleaner was sold at a profit of 37% and the dishwasher at a loss of 23%. If the selling price was the same for both items, then the cost price of the cheaper item was:
Option 1: INR 51,375
Option 2: INR 29,375
Option 3: INR 30,750
Option 4: INR 28,335
Correct Answer: INR 28,335
Solution : Let the cost price of the dishwater and vacuum cleaner be INR $y$ and INR $x$, respectively. Total cost price of a dishwasher and a vacuum cleaner = INR 78,750 $x$ + $y$ = $78750$-------------------(i) Profit of vacuum cleaner = 37% of $x$ = $0.37x$ Selling price of vacuum cleaner = $x$ + $0.37x$ = $1.37x$ Also, the loss of dishwasher = 23% of $y$ = $0.23y$ So, selling price of dishwasher = $y$ – $0.23y$ = $0.77y$ Since both have the same selling price, ⇒ $1.37x = 0.77y$ From equation (i), ⇒ $1.37(78750-y) = 0.77y$ ⇒ $2.14y =107887.5$ ⇒ $y$ = INR $50414.7 $ So, $x=78750-y= 78750-50414.7=28335.3$ = INR 28,335 approx ⇒ Since the vacuum cleaner is less expensive than the dishwasher. Hence, the correct answer is INR 28,335.
Question : $x$ does $\frac{1}{4}$ of a job in 6 days. $y$ completes the rest of the job in 12 days. Then $x$ and $y$ could complete the job together in:
Option 1: $9$ days
Option 2: $9\frac{3}{5}$ days
Option 3: $8\frac{1}{8}$ days
Option 4: $7\frac{1}{3}$ days
Correct Answer: $9\frac{3}{5}$ days
Solution : Time taken by $x$ to complete $\frac{1}{4}$ of a job = 6 days Time taken by $x$ to complete whole work = 6 × 4 = 24 days Part of work done by $x$ in a day = $\frac{1}{24}$ Time taken by $y$ to complete $\frac{3}{4}$ of a job = 12 days Time taken by $y$ to complete whole work = $\frac{12 × 4}{3}$ = 16 days Part of work done by $y$ in a day = $\frac{1}{16}$ Part of work done by $x$ and $y$ in a day = $\frac{1}{24}$ + $\frac{1}{16}$ = $\frac{4 + 6}{96}$ = $\frac{10}{96}$ Time taken by $x$ and $y$ together to complete whole work = $\frac{96}{10}$ = $9\frac{3}{5}$ days Hence, the correct answer is $9\frac{3}{5}$ days.
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