Staff Selection Commission Multi Tasking Staff Exam
Question : The Iceland team, while rowing, covered a distance of 20 km downstream in 2 hours and the same distance upstream in 5 hours. Find the speed of the stream.
Option 1: 3 km/h
Option 2: 8 km/h
Option 3: 7 km/h
Option 4: 4 km/h
Correct Answer: 3 km/h
Solution : Given, The Iceland team, while rowing, covered a distance of 20 km downstream in 2 hours and the same distance upstream in 5 hours. We know, Distance = speed × time Let the speed of the stream be $x$ and the speed of the
Question : Directions: Select the figure from the given options that can replace the question mark (?) and complete the pattern.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : On comparing the question figure and all the answer figures, the following figure will combine and make the complete pattern –
Hence, the first option is correct.
Question : A sum was doubled with a 12.5% rate of simple interest per annum. Then time taken for that sum to be doubled is:
Option 1: $8\frac{1}{2}$ years
Option 2: 8 years
Option 3: 10 years
Option 4: $12\frac{1}{2}$ years
Correct Answer: 8 years
Solution : Let the principal be $P$. Sum = $2P$ Let the time be $T$. $\therefore$ Simple interest = Amount – Principal = $2P-P=P$ We know, Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$ ⇒ $T=\frac{P×100}{P×12.5}$ ⇒ $T=\frac{1000}{125}$ $\therefore T$ = 8 years Hence, the correct
Question : After working for 20 days, Shikha finds that only 20 percent of the work is done. She employs Tina who is 100 percent more efficient than Shikha. In how many days Tina alone can complete the whole work?
Option 1: 40 days
Option 2: 30 days
Option 3: 50 days
Option 4: 60 days
Correct Answer: 50 days
Solution : Shikha worked for 20 days and completed 20% of the work Let the efficiency of Shikha is 1 unit per day. Shikha works 20 units in 20 days which is 20% of the work. So, total work = 100 units Since Tina is 100%
Question : Parts of the following sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer. My sister called me for my lunch hours to tell me that she was getting married.
Option 1: was getting married
Option 2: No error
Option 3: my sister called me for my
Option 4: lunch hours to tell me that she
Correct Answer: my sister called me for my
Solution : The correct choice is the third option.
The error lies in the preposition used. The correct preposition to indicate the time during which the sister is called is "during" rather than "for".
Therefore, the correct sentence is: "My sister called
Question : Comprehension:
In the following passage, some of the words have been deleted. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
One afternoon, a dozen Arizona State University students (1) _______to spend the morning cutting cardboard, mping filters, and assembling filters in an effort to (2)____125 portable air purifiers for local schools. That (3)_________morning, staff members at a homeless shelter in Los Angeles were setting (4)______ 20 homemade purifiers of their own, while in Brookline, Massachusetts, another DIY air purifier was whirring quietly in the back of a daycare (5)________ as children played.
Question: Select the most appropriate option to fill in the blank No. 4.
Option 1: on
Option 2: in
Option 3: up
Option 4: off
Correct Answer: up
Explanation:
The phrase setting up in this context implies the action of arranging or assembling something. The staff members at the homeless shelter in Los Angeles were actively putting together 20 homemade air purifiers.
Question : If a : b : c = 5 : 6 : 4, then what is the value of (a + b + c) : (3a + b – c)?
Option 1: 25 : 23
Option 2: 18 : 23
Option 3: 15 : 17
Option 4: 18 : 19
Correct Answer: 15 : 17
Solution : Given: $a : b : c = 5 : 6 : 4$ $⇒ a = 5x, b = 6x$, and $c = 4x$ So, $(a+b+c):(3 a+b-c) = \frac{5x+6x+4x}{3(5x)+6x-4x}=\frac{15x}{15x+6x-4x}=\frac{15x}{17x}=15:17$ Hence, the correct answer is 15 : 17.
Question : In the Preamble of the Indian Constitution, _________ assures the dignity of the individual.
Option 1: liberty
Option 2: fraternity
Option 3: equality
Option 4: justice
Correct Answer: fraternity
Solution : The correct answer is fraternity.
In the Preamble of the Indian Constitution, fraternity assures the dignity of the individual. Fraternity refers to the feeling of brotherhood and a sense of belonging to the country among its people. The objectives of the Preamble are to
Question : A trader allowed a discount of 20% on a trolley bag having a list price of Rs. 4,296 and earns a profit of 20%. What is the cost price of the trolley bag?
Option 1: Rs. 2,572
Option 2: Rs. 2,500
Option 3: Rs. 3,026
Option 4: Rs. 2,864
Correct Answer: Rs. 2,864
Solution : Given: A trader allowed a discount of 20% on a trolley bag having a list price of Rs. 4,296 and earns a profit of 20%. Selling price = 20% discount on 4296 = $4296\times (1–\frac{20}{100})=0.8\times 4296 =$ Rs. 3,436 Let the cost price of
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 64, 32, 96, 48, 144, 72, 216, ?
Option 1: 108
Option 2: 104
Option 3: 112
Option 4: 114
Correct Answer: 108
Solution : Given: 64, 32, 96, 48, 144, 72, 216, ?
The pattern is as follows – 64 ÷ 2 = 32; 32 × 3 = 96; 96 ÷ 2 = 48; 48 × 3 = 144; 144 ÷ 2 = 72; 72 × 3 = 216;
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