Staff Selection Commission Multi Tasking Staff Exam
Question : Two successive price increases of 15% and 40% of an article are equivalent to a single price increase of:
Option 1: 61%
Option 2: 52%
Option 3: 55%
Option 4: 60%
Correct Answer: 61%
Solution : For successive percentage change use the following formula, $x+y+\frac{xy}{100}$, where $x$ and $y$ are percentage increases or decreases, if increases take positive and if decreases take negative. Given: $x$ = 15% and $y$ = 40% $\therefore$ The equivalent price increase = $15+40+\frac{15×40}{100}= 61\%$ Hence, the correct answer is 61%.
Question : Directions: In a certain code language, DUKE is coded as ZQGA. What is the code for EXIT in that code language?
Option 1: ATEQ
Option 2: ATEP
Option 3: AUFQ
Option 4: AUEP
Correct Answer: ATEP
Solution : Given: DUKE is coded as ZQGA.
Subtract 4 from the place value of each letter of DUKE to get the code – D – 4 = Z; U – 4 = Q; K – 4 = G; E – 4 = A Thus, DUKE is coded as ZQGA. Similarly, follow the same pattern for EXIT→E – 4 = A; X – 4 = T; I – 4 = E; T – 4 = P
So, EXIT is coded as ATEP. Hence, the second option is correct.
Question : A shopkeeper sells a box and earns a profit of 5%. For the next box, he decides to charge double the selling price. What is the profit percent on the second box?
Option 1: 100%
Option 2: 110%
Option 3: 200%
Option 4: 80%
Correct Answer: 110%
Solution : Let the cost price of the first box be 100. $\therefore$ Selling price of first box = 100 + 5 = 105 He sold the 2nd box doubling the selling price of the first box. $\therefore$ Selling price of 2nd box = 105 × 2 = 210 So, the profit percentage on the 2nd box $=\frac{210-100}{100}×100=110\%$ Hence, the correct answer is 110%.
Question : A certain sum of money becomes triple itself in 8 years at simple interest. In how many years it will become five times of itself?
Option 1: 16 years
Option 2: 7 years
Option 3: 10 years
Option 4: 12 years
Correct Answer: 16 years
Solution : Given: A certain sum of money becomes triple itself in 8 years at simple interest. Let $P$ be the principal, the interest rate be $R$ and simple interest be $2P$ after 8 years. Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$ ⇒ $2P=\frac{P\times R\times 8}{100}$ ⇒ $R=\frac{2P\times 100}{P\times 8}=25\%$ Now, the principal becomes $5P$, then the interest would be $4P$ in $T$ years and the rate of interest is 25%. ⇒ $4P=\frac{P\times T\times 25}{100}$ ⇒ $T=\frac{4P\times 100}{P\times 25}=16$ years Hence, the correct answer is 16 years.
Question : Sonu can do work in 15 days, Monu can do it in 10 days, and Tipu can do it in 12 days. In how many days can Sonu, Monu, and Tipu together complete the work?
Option 1: 8 days
Option 2: 10 days
Option 3: 4 days
Option 4: 5 days
Correct Answer: 4 days
Solution : Sonu can do work in 15 days Monu can do it in 10 days Tipu can do it in 12 days Let the total work be considered as 120 units which is the multiple of 15, 10, and 12. Sonu can do ($\frac{120}{15}$) = 8 units of work in a day. Monu can do ($\frac{120}{10}$) = 12 units of work in a day. Tipu can do ($\frac{120}{12}$) = 10 units of work in a day. Hence, Sonu, Monu, and Tipu together can do (8 + 12 + 10) = 30 units of work in a day. $\therefore$ They can complete the total work of 120 units in ($\frac{120}{30}$) = 4 days. Hence, the correct answer is 4 days.
Question : Identify the segment that contains a grammatical error. If there is no error, select 'No error.' An appeasements policies / were all but a sham to misdirect / the local groups.
Option 1: the local groups.
Option 2: were all but a sham to misdirect
Option 3: An appeasements policies
Option 4: No error
Correct Answer: An appeasements policies
Solution : The error lies in the third option.
Explanation: The term "appeasements" is incorrect because "appeasement" is a word that doesn't require a plural form when used in this context to modify "policies". The correct form is "appeasement policy," as "appeasement" describes the type of policies being discussed.
Therefore, the correct sentence would be, "The appeasement policies were all but a sham to misdirect the local groups".
Question : Citric acid is present in free form in
Option 1: tamarind
Option 2: milk
Option 3: apple
Option 4: lemon
Correct Answer: lemon
Solution : The correct option is lemon.
Lemon contains citric acid in its free form. Lemons' sour flavour is caused by a natural organic acid. Lemon juice contains 5% to 6% citric acid. Other citrus fruits, such as oranges, limes, and grapefruits, contain citric acid. Other fruits and vegetables that contain it include tomatoes, pineapples, and kiwis. Citric acid has several applications. It is used in food, and drinks as a flavouring ingredient, as a preservative, and as a cleaning agent. It is also used to make medications and cosmetics.
Question : Directions: Which two numbers should be interchanged to make the given equation correct? 81 + 31 ÷ 9 – 7 = 33
Option 1: 9 and 7
Option 2: 31 and 9
Option 3: 31 and 81
Option 4: 81 and 7
Correct Answer: 31 and 81
Solution : Given: 81 + 31 ÷ 9 – 7 = 33
Let's check the options – First options: 9 and 7 81 + 31 ÷ 7 – 9 = 33 On solving the L.H.S. of the given equation – = 81 + 31 ÷ 7 – 9 = 81 + 4.43 – 9 = 76.43 ≠ 33 Second option: 31 and 9 81 + 9 ÷ 31 – 7 = 33 On solving the L.H.S. of the given equation – = 81 + 9 ÷ 31 – 7 = 81 + 0.29 – 7 = 74.29 ≠ 33 Third option: 31 and 81 31 + 81 ÷ 9 – 7 = 33 On solving the L.H.S. of the given equation – = 31 + 81 ÷ 9 – 7 = 31 + 9 – 7 = 33 Fourth option: 81 and 7 7 + 31 ÷ 9 – 81 = 33 On solving the L.H.S. of the given equation – = 7 + 31 ÷ 9 – 81 = 7 + 3.44 – 81 = –70.56 ≠ 33
So, the third option satisfies the equation. Hence, the third option is correct.
Question : Directions: Select the option figure that will replace the question mark (?) in the figure given below to complete the pattern. (Rotation is not allowed.)
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : On comparing the question figure and all the option figures, the following figure will combine and make the complete pattern –
Hence, the fourth option is correct.
Question : Which among the following teams won the first edition of ISL (Indian Super League)?
Option 1: Bengaluru FC
Option 2: Chennaiyin FC
Option 3: Atletico de Kolkata
Option 4: Kerala Blasters FC
Correct Answer: Atletico de Kolkata
Solution : The correct option is Atletico de Kolkata.
The first edition of the Indian Super League was won by Atletico de Kolkata by defeating Kerala Blasters FC in the final by 1-0. The Indian Super League was started in 2014 and was recognised as India's top-tier domestic league by FIFA and AFC.
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