Staff Selection Commission Combined Graduate Level Exam
Question : If the ___ firm has zero or only a fixed cost, the quantity supplied in equilibrium is given by the point where the marginal revenue is zero.
Option 1: perfect competition
Option 2: monopoly
Option 3: oligopoly
Option 4: monopolistic competition
Correct Answer: monopoly
Solution : The correct answer is monopoly.
Monopolies are market arrangements in which there is only one vendor for a product or service. This gives the monopolist complete market price power. In a monopolistic market, the monopolist will produce the level of production at which marginal
Question : Select the option that can be used as a one-word substitute for the given group of words. The practice of writing dictionaries.
Option 1: Anthropology
Option 2: Lexicography
Option 3: Photography
Option 4: Philology
Correct Answer: Lexicography
Solution : The correct choice is the second option.
The meanings of all given words are:
Question : The following bar chart shows the figures of foreign direct investment (FDI) into India from all over the world. What was the average of India's FDI over the years 1992 – 1997?
Option 1: 15.2
Option 2: 15.7
Option 3: 15.6
Option 4: 15.5
Correct Answer: 15.6
Solution : The average of India's FDI over the years 1992 – 1997 $= \frac{5.7+10.15+12.16+10.22+24.23+31.36}{6}$ $= \frac{93.82}{6}$ $= 15.6$ Hence, the correct answer is 15.6.
Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer. Sid and Harsh are ____ unable to complete the task.
Option 1: neither
Option 2: either
Option 3: each
Option 4: both
Correct Answer: both
Solution : The fourth option is the correct answer.
Both: It means the two of them or both of the two things or people together.
The meanings of the other options are as follows:
Neither: It means not one nor the other of two things
Question : Rima spends 35% of her monthly income on food articles and 15% of the remaining on clothes. She saves 40% of the remaining income. If her monthly salary is INR 27,500, how much does she save (in INR) every month?
Option 1: 6077.50
Option 2: 6170.50
Option 3: 6277.50
Option 4: 6370.50
Correct Answer: 6077.50
Solution : Rima's monthly salary is INR 27,500. Rima spends 35% of her monthly income on food. So, remaining salary = $\frac{100-35}{100}×27500=17875$ She spends 15% of the rest on clothes. So, after that, she has = $\frac{100-15}{100}×17875=15193.75$ She saves 40% of the remaining income. So, her savings
Question : If $\sqrt[3]{N}$ lies between 6 and 7, where $N$ is an integer then how many values $N$ can take?
Option 1: 126
Option 2: 127
Option 3: 128
Option 4: 125
Correct Answer: 126
Solution : Given: If $\sqrt[3]{N}$ lies between 6 and 7, where $N$ is an integer. $6^3=216$ $7^2=343$ The cube root of 216 is 6 and the cube root of 343 is 7. Every number between 343 and 216 has a cube root between 6 and 7. The
Question : Find the sum of $\left (1-\frac{1}{n+1} \right) + \left (1-\frac{2}{n+1} \right) + \left (1- \frac{3}{n+1} \right)+.....\left ( 1- \frac{n}{n+1} \right)$.
Option 1: $n$
Option 2: $\frac{n}{2}$
Option 3: $(n+1)$
Option 4: $\frac{(n+1)}{2}$
Correct Answer: $\frac{n}{2}$
Solution : $\left (1-\frac{1}{n+1} \right) + \left (1-\frac{2}{n+1} \right) + \left (1- \frac{3}{n+1} \right)+.....\left (1- \frac{n}{n+1} \right)$ = $\frac{n}{n+1}+\frac{n-1}{n+1}+\frac{n-2}{n+1}+...........+\frac{1}{n+1}$ $= \frac{1}{(n+1)}\frac{[n(n+1)]}{2}$ $=\frac{n}{2}$ Hence, the correct answer is $\frac{n}{2}$.
Question : The salaries of Rida and Riya are in the ratio of 3 : 5, respectively. If the salary of each one is increased by Rs. 5,000, then the new ratio becomes 5 : 7. What is Riya’s present salary?
Option 1: Rs. 12,500
Option 2: Rs. 7,500
Option 3: Rs. 2,500
Option 4: Rs. 10,000
Correct Answer: Rs. 12,500
Solution : Let the present salaries of Rida and Riya be $3x$ and $5x$ respectively. According to the question, $(3x + 5000) : (5x + 5000) = 5 : 7$ ⇒ $21x + 35000 = 25x + 25000$ ⇒ $4x = 10000$ ⇒ $x = 2500$
Question : Who was the first known Gupta ruler ?
Option 1:
Sri Gupta
Option 2: Chandragupta I
Option 3: Ghatotkacha
Option 4: Kumaragupta I
Correct Answer:
Solution : Correct Answer is Sri Gupta
Beginning in the third century CE and lasting until 543 CE, the Gupta empire. It was an empire from prehistoric India. The Gupta dynasty was founded by Sri Gupta. He was in charge from 240 to 280 AD. According
Question : Directions: Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster. CONTROL : NOCTRLO :: MISTAKE : SIMTAEK :: JOURNAL : ?
Option 1: AOUNRJL
Option 2: OJRLAUN
Option 3: JRNAOUL
Option 4: UOJRNLA
Correct Answer: UOJRNLA
Solution : Given: CONTROL : NOCTRLO :: MISTAKE : SIMTAEK :: JOURNAL : ?
Shuffle the position of the letters of the words CONTROL and MISTAKE to get their related letter clusters as shown –
So, CONTROL is related to NOCTRLO.
So, MISTAKE is related to SIMTAEK.
The Question containing Inaapropriate or Abusive Words
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