Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: If A stands for ÷, B stands for ×, C stands for + and D stands for –, what will come in place of the question mark (?) in the following equation? 23 C 13 B 841 A 29 D 91 = ?
Option 1: 329
Option 2: 319
Option 3: 289
Option 4: 309
Correct Answer: 309
Solution : Given: 23 C 13 B 841 A 29 D 91 = ?
After replacing the letters with the mathematical signs, the equation becomes – = 23 + 13 × 841 ÷ 29 – 91 = 23 + 13 × 29 – 91 = 23 +
Question : Direction: If TODAY is coded as UQECZ, how can BEFORE be coded?
Option 1: CCBHIG
Option 2: HIJQSG
Option 3: CGGQSG
Option 4: CPSSF
Correct Answer: CGGQSG
Solution : Given:
TODAY is coded as UQECZ
Here, T + 1 = U ; O + 2 = Q ; D + 1 = E ; A + 2 = C ; Y + 1 = Z
Similarly, BEFORE will be coded as:
B + 1
Question : The following sentence has been divided into four parts. One of them contains an error. Select the part that contains the error from the given options.
The English / often / fought / French.
Option 1: French
Option 2: often
Option 3: fought
Option 4: The English
Correct Answer: French
Solution : The correct choice is the first option.
Explanation: French represents the language of France, also used in parts of Belgium, Switzerland, and Canada, in several countries of northern and western Africa and the Caribbean, and elsewhere. whereas the French points to the people of
Question : If the radii of two circles are 7 cm and 4 cm and the length of the transverse common tangent is 13 cm, then the distance between the two centres is:
Option 1: $\sqrt{290}$ cm
Option 2: $\sqrt{190}$ cm
Option 3: $\sqrt{128}$ cm
Option 4: $\sqrt{240}$ cm
Correct Answer: $\sqrt{290}$ cm
Solution : Given, $r{_1}$ = 7 cm and $r{_2}$ = 4 cm The length of the transverse common tangent = 13 cm The length of a transverse common tangent $=\sqrt{d^2−(r{_1}+r{_2})^2}$ ⇒ $13=\sqrt{d^2−(7+4)^2}$ ⇒ $13^2=d^2-11^2$ ⇒ $169=d^2-121$ ⇒ $d^2=290$ ⇒ $d=\sqrt{290}$ cm Hence, the correct answer is
Question : Macroeconomics deals with which of the following studies? I. Reasons behind the unemployment of resources. II. Determination of total output.
Option 1: Only I
Option 2: Only II
Option 3: Neither I nor II
Option 4: Both I and II
Correct Answer: Both I and II
Solution : The correct answer is Both I and II.
I. The reason behind the unemployment of resources.
II. Determination of total output.
A branch of Economics known as macroeconomics studies the composition, dynamics and behaviour of the global economy.
It focuses on
Question : Rohita offers a discount of 20% on the marked price of an object. Due to the recession of the market, she further offers a discount of 30% on its sale. What is the equivalent single discount percentage corresponding to these two successive discount offers?
Option 1: 42%
Option 2: 56%
Option 3: 40%
Option 4: 44%
Correct Answer: 44%
Solution : Single equivalent discount = $(a+b-\frac{a×b}{100}$)%, where $a$% and $b$% are successive discounts. Single Discount of 20% and 30% $=20 + 30 - \frac{20\times30}{100}$ $= 50 - 6$ $= 44$% Hence, the correct answer is 44%.
Question : What is the least possible value of p for which the number 84pp153p is divisible by 9?
Option 1: 2
Option 2: 1
Option 3: 7
Option 4: 5
Correct Answer: 2
Solution : A number is divisible by 9 if the sum of its digits is divisible by 9. Given number = 84pp153p The sum of digits without including p = 8 + 4 + 1 + 5 + 3 = 21 ⇒ The least possible value of
Question : Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
I can't concentrate on my work because I am thinking off that beautiful scene.
Option 1: was think of
Option 2: am thinking about
Option 3: is thinking about
Option 4: No improvement
Correct Answer: am thinking about
Solution : The correct choice is the second option.
Explanation:
In this question, thinking off should be replaced with thinking about, as the preposition about is used to talk about the subject of something. This helps in conveying the intended meaning of the sentence
Question : The straight line $y = 3x$ must pass through the point:
Option 1: (0, 0)
Option 2: (0, 1)
Option 3: (1, 2)
Option 4: (2, 0)
Correct Answer: (0, 0)
Solution : Given: $y = 3x$ Putting the values of $(x, y)$ from the options, only (0, 0) satisfies LHS = RHS. Thus, it passes through the origin (0,0). Hence, the correct answer is (0,0).
Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 127, 131, 137, 139, ?, 151, 157, 163
Option 1: 149
Option 2: 147
Option 3: 141
Option 4: 143
Correct Answer: 149
Solution : Given: 127, 131, 137, 139, ?, 151, 157, 163
Prime numbers between 125 to 165 are – 127, 131, 137, 139, 149, 151, 157, 163
So, the required term is 149. Hence, the first option is correct.
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