Staff Selection Commission Multi Tasking Staff Exam
Question : Directions: In the given question, a sentence is given with a blank to be filled in with an appropriate word. Four alternatives are suggested for each question. Choose the correct alternative out of the four alternatives.
Tables are usually made _____ wood.
Option 1: from
Option 2: of
Option 3: with
Option 4: by
Correct Answer: of
Solution : The correct choice is the second option.
Of is the correct preposition, as it helps in indicating the substance the table is made from. It helps specify the material (wood) from which the table is constructed.
Therefore, the complete sentence is: Tables are usually
Question : Of the three numbers, the first is twice the second, and the second is twice the third. The average of the reciprocal of the numbers is $\frac{7}{12}$. The numbers are:
Option 1: 20, 10 and 5
Option 2: 4, 2 and 1
Option 3: 36, 18 and 9
Option 4: 16, 8 and 4
Correct Answer: 4, 2 and 1
Solution : Let us assume the third number is $x$. Second number = 2$x$ First number = 2(2$x$) = 4$x$ Reciprocals of the three numbers = $\frac{1}{4x}, \frac{1}{2x}, \frac{1}{x}$ Average of the reciprocals = $\frac{7}{12}$ Sum of the reciprocals = $\frac{1}{4x}+\frac{1}{2x}+\frac{1}{x}=\frac{7}{4x}$ Average of reciprocals
Question : Directions: The sequence of folding a piece of paper and how the folded paper has been cut is shown in the following figures. How would this paper look when unfolded?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like –
Hence, the first option is correct.
Question : P and Q start from the same point and at the same time with speeds of 20 km/hr and 16km/hr respectively. What is the distance between P and Q after 4 hours if both move in the same direction?
Option 1: 12 km
Option 2: 20 km
Option 3: 15 km
Option 4: 16 km
Correct Answer: 16 km
Solution : The relative speed of P concerning Q = 20 km/hr − 16 km/hr = 4 km/hr Now, use the formula of distance ⇒ Distance = Speed × Time = 4 km/hr × 4 hr = 16 km Hence, the correct answer is 16 km.
Question : Directions: Select the option in which the numbers share the same relationship in the set as that shared by the numbers in the given set. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g.13 – operations on 13 such as adding/ subtracting/ multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (100, 150, 125) (500, 400, 450)
Option 1: (14, 16, 28)
Option 2: (120, 100, 130)
Option 3: (200, 400, 300)
Option 4: (180, 140, 260)
Correct Answer: (200, 400, 300)
Solution : Given: (100, 150, 125); (500, 400, 450)
Divide the sum of the first two numbers by 2, to get the third number – (100, 150, 125)→(100 + 150) ÷ 2 = 250 ÷ 2 = 125 (500, 400, 450)→(500 + 400) ÷ 2
Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Option 1: 6
Option 2: 8
Option 3: 5
Option 4: 4
Correct Answer: 6
Solution : In each row, divide the first number by 3 and the second number by 2, to get the second and third numbers respectively – In the first column→60 ÷ 3 = 20 and 20 ÷ 2 = 10 In the second column→90 ÷ 3 =
Question : As per Census 2011, which of the following was the most literate state of India?
Option 1: Chhattisgarh
Option 2: Bihar
Option 3: Kerala
Option 4: Punjab
Correct Answer: Kerala
Solution : The correct answer is Kerala.
In the 2011 Census, Kerala emerged with the highest literacy rate at 94%, setting the benchmark. Chandigarh, Himachal Pradesh and Delhi also surpassed the national average, yet a noteworthy trend was the prevalence of higher male literacy across all
Question : Directions: By interchanging the given two numbers (not digits) which of the following equations will not be correct? 5 and 6
Option 1: 6 × 8 – 5 × 4 = 16
Option 2: 5 × 2 – 4 + 6 = 13
Option 3: 5 – 3 × 6 + 4 = –3
Option 4: 6 – 5 + 2 = 1
Correct Answer: 5 – 3 × 6 + 4 = –3
Solution : Given: 5 and 6
Let's check the options – First option: 6 × 8 – 5 × 4 = 16 On interchanging the numbers, we get – = 5 × 8 – 6 × 4 = 40
Question : If the price of onion increases from INR 60 per kg to INR 75 per kg, then by what percentage should a household decrease the consumption of onion so that expenditure remains the same?
Option 1: 40%
Option 2: 25%
Option 3: 20%
Option 4: 30%
Correct Answer: 20%
Solution : Let the household consume $a$ kgs of onion earlier and $b$ kgs of onion later. ⇒ The price paid by the household earlier = $60a$ ⇒ The price paid by the household now = $75b$ Since both prices should be the same, ⇒ $ 60a
Question : Find the LCM of reciprocals of 22 and 16.
Option 1: $\frac{1}{2}$
Option 2: $\frac{1}{3}$
Option 3: $\frac{1}{6}$
Option 4: $\frac{1}{4}$
Correct Answer: $\frac{1}{2}$
Solution : The reciprocals of 22 and 16 are $\frac{1}{22}$ and $\frac{1}{16}$ respectively. The least common multiple (LCM) of two fractions is the LCM of their numerators divided by the greatest common divisor (GCD) of their denominators. However, since the numerators of both fractions are 1 (the
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