Staff Selection Commission Multi Tasking Staff Exam
Question : Directions: Select the option in which the given figure is embedded (rotation is NOT allowed).
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of the question figure with all the option figures, it is evident that the given question figure is embedded only in the second option figure.
Hence,
Question : A alone can do $\frac{1}{10}$th part of a work in 8 hours. B alone can do $\frac{1}{5}$th part of the same work in 4 hours. If they work together, then how many hours will they take to complete $\frac{9}{16}$th part of the same work?
Option 1: 9 hours
Option 2: 5 hours
Option 3: 8 hours
Option 4: 4 hours
Correct Answer: 9 hours
Solution : Let the rate at which A and B can complete the work as $R_a$ and $R_b$, respectively. Given that A can do $\frac{1}{10}$th part of the work in 8 hours. ⇒ $R_a=\frac{1}{10×8}=\frac{1}{80}$ work/hour Given that B can do $\frac{1}{5}$th part of the work in
Question : The average age of 15 members of a committee is increased by 4 years when two members whose ages are 60 years and 70 years are replaced by two new members. What is the average age of the new members?
Option 1: 105 years
Option 2: 80 years
Option 3: 85 years
Option 4: 95 years
Correct Answer: 95 years
Solution : Let the average age of 15 members of a committee be $x$. The sum of ages of 15 members = $15x$ New average age = $x+4$ New sum of ages = $15(x+4) = 15x+60$ Let $y$ be the average age of 2 new members.
Question : Select the wrongly spelt word.
Option 1: Unsavoury
Option 2: Ethical
Option 3: Unconventional
Option 4: Alturistc
Correct Answer: Alturistc
Solution : The fourth option is correct.
The incorrect spelling alturistc has a missing "i" after the "r". The correct spelling of the word, meaning selfless concern for the well-being of others, is altruistic.
Question : Three numbers are in the ratio 2 : 3 : 5 and their LCM is 60. What is the HCF of the numbers?
Option 1: 2
Option 2: 4
Option 3: 10
Option 4: 6
Correct Answer: 2
Solution : Given, Three numbers are in the ratio 2 : 3 : 5 and their LCM is 60. Let the number be $2x$, $3x$, and $5x$. ⇒ LCM of ($2x$, $3x$ and $5x$) $=2 × 3 × 5 × x=30x$ According to the question $30x =
Question : Directions: In this question, a word is represented by only one set of numbers, as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets, as in the two matrices given below. The columns and rows of Matrix (I) are numbered from 0 to 4, and those of Matrix (II) are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column e.g. – E can be represented by 04, 21 etc., and P can be represented by 56, 79 etc. Similarly, you have to identify the set for the word MAXI.
Option 1: 76, 56, 34, 57
Option 2: 68, 00, 65, 76
Option 3: 86, 66, 56, 67
Option 4: 67, 65, 44, 75
Correct Answer: 68, 00, 65, 76
Solution : Given: MAXI
Number representations of each letter – M→59, 68 A→00, 44 X→65, 78, 97 I→57, 76
Let's check the options – First option: 76, 56, 34, 57 – M and A cannot be represented by 56 and 34. Second option: 68,
Question : Select the most appropriate option to fill in the blank. The park is a/an ______ place to stroll and exercise.
Option 1: unopen
Option 2: doubtful
Option 3: ideal
Option 4: fussy
Correct Answer: ideal
Solution : The third option is the correct answer.
Explanation: Ideal means perfect or best suited for a particular purpose. In the context of the sentence, describing the park as an ideal place suggests that it is well-suited for strolling and exercising.
The meanings of other options
Question : Rukmini Devi Arundale was awarded with "Padma Bhushan" in the year________.
Option 1: 1956
Option 2: 1987
Option 3: 1978
Option 4: 1964
Correct Answer: 1956
Solution : The correct answer is 1956.
Rukmini Devi Arundale was an Indian theosophist, dancer, and choreographer of the Indian classical dance form of Bharatanatyam. She worked for the revival of Bharatanatyam from its original "Sadhir style" prevalent amongst the temple dancers, the Devadasis.
Question : A merchant purchases a wristwatch for Rs. 450 and fixes its list price in such a way that, after allowing a discount of 10%, he earns a profit of 20%. Find the list price of the watch.
Option 1: Rs. 480
Option 2: Rs. 450
Option 3: Rs. 600
Option 4: Rs. 540
Correct Answer: Rs. 600
Solution : Cost price of the watch = Rs. 450 Profit percentage = 20% The selling price of the watch = cost price + profit = $450 + 20$% of $450$ = $450 + \frac{20 × 450}{100}$ = $450+\frac{9000}{100}$ = $450 + 90$ = $540$ Discount
Question : What is the difference between a discount of 35% and two successive discounts of 30% and 5% on a bill of INR 10,00,000?
Option 1: INR 15,500
Option 2: INR 15,000
Option 3: INR 14,000
Option 4: INR 16,500
Correct Answer: INR 15,000
Solution : First discount = 35% Successive discounts = 30% and 5% Effective discount = 30 + 5 – $\frac{30 ×5}{100}$ = 35 – 1.5 = 33.5% Required difference = (35 – 33.5)% of 10,00,000 = $\frac{1.5}{100}×10,00,000$ = 15,000 Hence, the correct answer is INR 15,000.
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