Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: The second number in the given number pairs is obtained by performing certain mathematical operations(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair.
Option 1: 6 : 12
Option 2: 10 : 60
Option 3: 8 : 40
Option 4: 7 : 21
Correct Answer: 8 : 40
Solution : Let's check each option – First option: 6 : 12; (6 – 4) × 6 = 2 × 6 = 12 Second option: 10 : 60; (10 – 4) × 10 = 6 × 10 = 60 Third option: 8 : 40; (8
Question : The arc length of a sector of a circle that subtends a $22.5^{\circ}$ angle at the centre is given as $16.5$ cm. What will be the radius (in cm) of the circle? [Use $\pi=\frac{22}{7}$]
Option 1: 35
Option 2: 49
Option 3: 42
Option 4: 48
Correct Answer: 42
Solution : Given: Length of a sector = $16.5$ cm $\theta$ = $22.5^\circ$ We know that, Length of the sector = $\frac{\theta}{360^\circ}×2\pi r$ ⇒ $16.5 = \frac{22.5^\circ}{360^\circ}×2\pi r$ ⇒ $16.5 = \frac{1}{16}×2\pi r$ ⇒ $r = \frac{16×16.5×7}{2×22} = 42$ cm Hence, the correct answer is 42.
Question : Which of the following players won silver at the Tokyo Olympics 2020?
Option 1: Mirabai Chanu and Sushil Kumar
Option 2: P. V. Sindhu and Sushil Kumar
Option 3: Ravi Kumar Dahiya and Mirabai Chanu
Option 4: Ravi Kumar Dahiya and Sushil Kumar
Correct Answer: Ravi Kumar Dahiya and Mirabai Chanu
Solution : The correct answer is Ravi Kumar Dahiya and Mirabai Chanu.
Ravi Kumar Dahiya clinched the men's freestyle 57 kg wrestling silver, reaching the final but losing to a Russian Olympic Committee wrestler. Mirabai Chanu secured the women's weightlifting 49
Question : Directions: Which term from among the given options can replace the question mark (?) in the following series to make it logically complete? QX 10, ?, WD 30, ZG 26, CJ 130
Option 1: SB 15
Option 2: TA 6
Option 3: SC 12
Option 4: TB 18
Correct Answer: TA 6
Solution : Given: QX 10, ?, WD 30, ZG 26, CJ 130
In the above-given series, add 3 to the place values of the letters, subtract 4, and multiply 5 alternatively in the numbers to arrive at the next term of the series. First letter of
Question : Directions: In the following question, select the missing number from the given series. 16, 32, 64, 128, ?, 512
Option 1: 320
Option 2: 128
Option 3: 192
Option 4: 256
Correct Answer: 256
Solution : Given: 16, 32, 64, 128, ?, 512
In the above-given series, multiply the previous number by 2 to get the next number. 16 × 2 = 32; 32 × 2 = 64; 64 × 2 = 128; 128 × 2 = 256; 256 × 2
Question : Directions: Identify the figure given in the options which when put in place of (?) will logically complete the series.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the given figure – The image inside the box rotates 90 in a clockwise direction in each figure. So, the next figure of the series will be –
Hence, the second option is correct.
Question : Directions: If A stands for ÷, B stands for ×, C stands for +, D stands for –. What will come in place of the question mark (?) in the following equation? 83 C 7 B 539 A 49 D 29 = ?
Option 1: 131
Option 2: 171
Option 3: 121
Option 4: 180
Correct Answer: 131
Solution : Given: 83 C 7 B 539 A 49 D 29 = ?
After replacing the letters with the mathematical signs, the equation becomes – = 83 + 7 × 539 ÷ 49 – 29 = 83 + 7 × 11 – 29 = 83 +
Question : The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any errors, mark 'No error' as your answer. The food container / is not enough big to meet / the demands of the affected people.
Option 1: No error
Option 2: is not enough big to meet
Option 3: The food container
Option 4: the demands of the affected people.
Correct Answer: is not enough big to meet
Solution : The correct choice is the second option.
Explanation: The error lies in the placement of enough. The correct structure is "big enough", not "enough big". When enough is placed after the adjective, it describes the adjective, whereas if
Question : Directions: In this question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3), which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (4).
If a man remains as careful as he is in the beginning, there will be no failure.
(1) he was in the beginning
(2) he in the beginning
(3) he at the beginning
(4) No improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The sentence can be improved using the first option.
The sentence compares the state of the man in the present with his state in the past. Hence, the simple past tense should be used in this case when referring to the past action.
Therefore,
Question : Points D, E, and F all lie on the circumference of a circle with centre O. If angle DEF = 48°, then what is a possible value of angle DOF?
Option 1: 84°
Option 2: 96°
Option 3: 90°
Option 4: 48°
Correct Answer: 96°
Solution : The points D, E, and F lie in a circle with centre O. $\angle$DEF = 48$^{\circ}$ The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle. According to the
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