Staff Selection Commission Multi Tasking Staff Exam
Question : What is the average of the first five multiples of 11?
Option 1: 11
Option 2: 55
Option 3: 33
Option 4: 22
Correct Answer: 33
Solution : Average of first five multiples of 11 = $\frac{11 + 2×11 + 3×11 + 4×11 + 5×11}{5}$ = $\frac{11(1+2+3+4+5)}{5}$ = $\frac{11×15}{5}$ = 33 Hence, the correct answer is 33.
Question : In a party hall, there are people in blue and red dresses. The ratio of the number of men in blue to the number of women in red is 3 : 7. The ratio of men in red to the number of women in blue is 2 : 1. If the ratio of the number of people in blue to the number of people in red is 35 : 76, then what is the ratio of number of men to the number of women?
Option 1: 47 : 51
Option 2: 40 : 43
Option 3: 62 : 57
Option 4: 52 : 59
Correct Answer: 52 : 59
Solution : Given: (Men in blue) : (Women in red) = 3 : 7 (Men in red) : (Women in blue) = 2 : 1 (People in blue) : (People in red) = 35 : 76 Let the men in blue and women in red
Question : Select the option that will improve the underlined part of the given sentence. In case no improvement is needed, select 'No improvement required'.
She had no sooner taken a few steps forward that she suddenly recoiled.
Option 1: No sooner had she taken a few steps forward than
Option 2: She did no sooner taken a few steps forward than
Option 3: No improvement required
Option 4: She did no sooner took a few steps forward than
Correct Answer: No sooner had she taken a few steps forward than
Solution : The correct option is the first option.
Explanation: The grammatical structure following "no sooner" requires inversion, where the auxiliary verb comes before the subject. In this case, the correct form is "No sooner had she taken
Question : A market in which there are few number of large firms is called as
Option 1: Duopoly
Option 2: Competition
Option 3: Oligopoly
Option 4: Monopoly
Correct Answer: Oligopoly
Solution : The correct answer is Oligopoly.
An oligopoly is a market of only a few significant enterprises. In an oligopoly, a few dominant companies control a portion of the market, have the power to set pricing and dominate the industry. Consumers may experience both advantages and
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error".
The hockey match (1) / between India and Pakistan (2) / was much exciting. (3) / No error. (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The error lies in the third part of the sentence.
The reason for the error is that "much" should be replaced with "very" to convey the degree of excitement appropriately. "Much" is generally used with uncountable nouns, while "very" is used to modify adjectives like
Hardly had he disappeared that her mother clomped down the steps, looking for him.
Option 1: Hardly did he disappeared that her mother
Option 2: Hardly had he disappear that her mother
Option 4: Hardly had he disappeared when her mother
Correct Answer: Hardly had he disappeared when her mother
Solution : The correct choice is the fourth option.
Explanation: The sentence employs past perfect tense to indicate an action that occurred before another past action. "Hardly had he disappeared" is a correct usage of past perfect, indicating that
Question : Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'No substitution required'. (In fact, climbing fern is spreading so rapidly that its) now the state's worst invasive weed.
Option 1: In fact, climbing fern is spreading so rapid that it's
Option 2: In fact, climbing fern is spread so rapidly that its
Option 3: In fact, climbing fern is spreading so rapidly that it's
Option 4: No substitution required
Correct Answer: In fact, climbing fern is spreading so rapidly that it's
Solution : The third option is correct.
The error in the original sentence is the use of its, which is a possessive pronoun. However, in this context, the sentence requires the contraction it's, which is a short
Question : How many litres of water can a hemispherical bowl of diameter 21 m hold? (1 m3 =1000 litres)
Option 1: 2100000 litres
Option 2: 2425500 litres
Option 3: 2322500 litres
Option 4: 2250500 litres
Correct Answer: 2425500 litres
Solution : Given: Diameter = 21 m Radius = $\frac{21}{2}$ m Volume of hemisphere = $\frac{2}{3}\pi r^3$ = $\frac{2}{3}\times\frac{22}{7} \times\frac{21}{2} \times\frac{21}{2} \times\frac{21}{2}$ = $2425.5$ m3 Given: 1 m3 =1000 litres So, 2425.5 m3 = 2425.5 × 1000 = 2425500 litres Hence, the correct
Question : GDP is an indicator of a country's economy. What does 'D' in GDP stand for?
Option 1: Development
Option 2: Domestic
Option 3: Dividend
Option 4: Deficit
Correct Answer: Domestic
Solution : The correct answer is Domestic.
GDP stands for gross domestic product. The total monetary or market value of all completed goods and services produced inside a nation's boundaries over a given period is known as the gross domestic product or GDP. It serves as
Question : The difference between the compound interest and the simple interest on a certain sum of money at 10% per annum for 2 years is INR 200. What is the sum of money, if in the case of compound interest, interest is compounded annually?
Option 1: INR 25,000
Option 2: INR 15,000
Option 3: INR 12,000
Option 4: INR 20,000
Correct Answer: INR 20,000
Solution : Given: The difference between the compound interest and the simple interest on a certain sum of money at 10% per annum for 2 years is INR 200. Use the formula, $CI–SI=P(\frac{R}{100})^T$ where $SI$, $CI$, $R$, $T$ are the simple interest, compound interest, rate, and
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