Staff Selection Commission Combined Graduate Level Exam
Question : If $4 x^2+y^2=40$ and $x y=6$, find the positive value of $2 x+y$.
Option 1: 8
Option 2: 6
Option 3: 5
Option 4: 4
Correct Answer: 8
Solution : We have, $(2x+y)^2=(2x)^2+y^2+2\times 2x \times y$ $⇒(2x+y)^2=(4x^2+y^2)+4xy$ $⇒(2x+y)^2=40+4\times 6$ $⇒(2x+y)^2=64$ $⇒2x+y=\pm \sqrt{64}$ $⇒2x+y=\pm 8$ The positive value is 8. Hence, the correct answer is 8.
Question : Select the most appropriate synonym of the underlined word.
The company was engaged in spurious trade practices.
Option 1: Effective
Option 2: Fraudulent
Option 3: Spacious
Option 4: Trendy
Correct Answer: Fraudulent
Solution : The correct choice is the second option.
The adjective spurious means to be fake or false. Fraudulent means involving deceit, dishonesty, or deception to deceive or gain an unfair advantage.
The meanings of the other options are as follows:
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
Do you know the time (when) the train departs?
(1) which
(2) by
(3) that
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Correct Answer: 4
Solution : The sentence is already correct and does not need any improvement.
Therefore, the correct answer is the fourth option.
Question : What is the reflection of the point (5, –3) in the line y = 3?
Option 1: (5, 3)
Option 2: (5, 9)
Option 3: (5, –6)
Option 4: (–5, 3)
Correct Answer: (5, 9)
Solution : Given: The point (5, –3) in the line y = 3. A point (x, y) that is reflected over the line y = a will have the relationship (x, y) between its actual and image coordinates, [x, (2a – y)]. The reflection of the
Question : Select the correct direct form of the given sentence. The doctor said that they had performed their bit.
Option 1: The doctor said, “We performed our bit."
Option 2: The doctor said, “We are performing our bit."
Option 3: The doctor said, “We have performed our bit."
Option 4: The doctor says, “We had performed our bit."
Correct Answer: The doctor said, “We have performed our bit."
Solution : The correct choice is the third option.
Direct speech is a form of speech or writing where the actual words spoken by a person are quoted within quotation marks and attributed to the speaker.
The steps of
Question : Select the option that expresses the given sentence in passive voice.
You have adopted the plan.
Option 1: The plan should be adopted by you.
Option 2: The plan is adopted by you.
Option 3: The plan has being adopted by you.
Option 4: The plan has been adopted by you.
Correct Answer: The plan has been adopted by you.
Solution : The correct choice is the fourth option.
Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active sentence becomes the subject in
Question : If the volume of a cube is 4096 cm3, then what is the length of the side of the cube?
Option 1: 12 cm
Option 2: 18 cm
Option 3: 16 cm
Option 4: 14 cm
Correct Answer: 16 cm
Solution : Volume of a cube = 4096 cm3 So, (side)3 = 212 Side = $\sqrt[3]{2^{12}}$ = 24 = 16 cm Hence, the correct answer is 16 cm.
Question : The simple interest received on a sum is $\frac{25}{36}$ of the sum. The number of years is equal to the annual rate of interest. What is the annual rate of interest?
Option 1: 9.25 percent
Option 2: 10.25 percent
Option 3: 6.62 percent
Option 4: 8.33 percent
Correct Answer: 8.33 percent
Solution : Rate of interest = $r$ Time = $r$ Let the sum value be $x$, then Simple Interest will be: Simple Interest = $\frac{(x \times r \times r)}{100}$ ⇒ $(\frac{25}{36})x = \frac{(x \times R^2)}{100}$ ⇒ $(\frac{25}{36}) = \frac{(r^2)}{100}$ ⇒ $r^2 = (\frac{25 \times 100}{36})$ ⇒
Question : $ABCD$ is a cyclic quadrilateral of which $AB$ is the diameter. Diagonals $AC$ and $BD$ intersect at $E$. If $\angle DBC=35^\circ$, then $\angle AED$ measures _________
Option 1: 35$^\circ$
Option 2: 45$^\circ$
Option 3: 55$^\circ$
Option 4: 90$^\circ$
Correct Answer: 55$^\circ$
Solution : Given, a cyclic quadrilateral $ABCD$ with $AB$ as a diameter And, $\angle DBC=35^\circ$ We know, $\angle ACB=90^\circ$ (angle in semicircle) In $\triangle BEC$, $\angle ECB+\angle EBC+\angle BEC=180^\circ$ or, $\angle BEC=180^\circ-90^\circ-35^\circ$ So, $\angle BEC=\angle AED = 55^\circ$ (vertically opposite angle) Hence, the correct answer is 55$^\circ$.
Question : Directions: Which of the following cubes in the answer figure cannot be made based on the unfolded cube in the question figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Properties of a dice – 1. Opposite faces of a dice cannot appear or hide together. 2. Sides of the opposite faces of a dice cannot touch each other. Rules to find out the opposite faces of a dice when two or more positions of the
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