Staff Selection Commission Combined Higher Secondary Level Exam
Question : A shopkeeper gives an additional concession of 5% on an item which is already discounted by 15% on the marked price. If the buyer pays INR 3,068.50 for the item, then find the marked price.
Option 1: INR 3,500
Option 2: INR 3,700
Option 3: INR 3,800
Option 4: INR 3,780
Correct Answer: INR 3,800
Solution : We know the formula for successive discounts, Selling price = $MP(1 - \frac{D_1}{100})(1 - \frac{D_2}{100})$ Where $MP$ is the marked price and $D_1, D_2$ are the discounts. $\mathrm{D_1=5}$% $\mathrm{D_2=15}$% On substituting the values, $\mathrm{MP(1 - \frac{5}{100})(1 - \frac{15}{100})}=3068.50$ $⇒\mathrm{MP×( \frac{19}{20})×(\frac{17}{20})}=3068.50$ $⇒\mathrm{MP×( \frac{323}{400})}=3068.50$ $⇒\mathrm{MP}=\frac{400}{323}× 3068.50$
Question : Directions: In a certain code language, LOAF is coded as 8362, LICK is coded as 5103, JOCK is coded as 0841, JEAN is coded as 9472. What is the code for LOC in that code language?
Option 1: 385
Option 2: 341
Option 3: 381
Option 4: 480
Correct Answer: 381
Solution : Given: I. LOAF is coded as 8362 II. LICK is coded as 5103 III. JOCK is coded as 0841 IV. JEAN is coded as 9472
By comparing all the above-coded letters, we find that – On comparing words I and II, the common letter and
Question : A computer programming language often used by children is:
Option 1: LOGO
Option 2: PILOT
Option 3: BASIC
Option 4: JAVA
Correct Answer: LOGO
Solution : The correct answer is LOGO.
LOGO is another popular computer programming language among children. It is a text-based language, but it is intended to be simple to learn and apply. LOGO is also incredibly adaptable and can be used to build tasks, including sketching graphics,
Question : A boat goes 10 km upstream in 50 minutes and the speed of the stream is 3 kmph. Find the speed of the boat in still water (in kmph).
Option 1: 15
Option 2: 10
Option 3: 8
Option 4: 12
Correct Answer: 15
Solution : Given: A boat goes 10 km upstream in 50 minutes. The speed of the stream is 3 kmph. Upstream speed in km/h = $\frac{10}{50}×60=12$ kmph Let the speed of a boat in still water be $x$ kmph. We know that, Upstream speed = speed of
Question : Bihu is a festival that is observed in :
Option 1: West Bengal .
Option 2: Maharashtra.
Option 3: Assam .
Option 4: Tamil Nadu .
Correct Answer: Assam .
Solution : The correct option is - Assam
In the northeastern Indian state of Assam, Bihu is one of the most important festivals. 'Rongali' or 'Bohag Bihu' is observed in April, 'Kongali' or 'Kati Bihu' is observed in October or November, and 'Bhogali' or 'Magh Bihu'
Question : If the areas of two similar triangles are in the ratio 36 : 121, then what is the ratio of their corresponding sides?
Option 1: 6 : 11
Option 2: 11 : 5
Option 3: 6 : 5
Option 4: 5 : 12
Correct Answer: 6 : 11
Solution : Given, The ratio of the area of two similar triangles = 36 : 121 If two triangles are similar, then the ratio of the area of both triangles is proportional to the square of the ratio of their corresponding sides. ⇒ $\frac{\text{(Area of
Question : Which of the statements is not correct regarding energy?
Option 1: The energy possessed by a body due to its change in position or shape is called potential energy.
Option 2: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.
Option 3: The gravitational potential energy of an object of mass, M raised through a height, H from the Earth's surface is given by MgH.
Option 4: An object in motion possesses what is known as the kinetic energy of the object.
Correct Answer: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.
Solution : The correct option is an object of mass m moving with velocity v has a kinetic energy of (mv)/2.
The incorrect statement asserts that the kinetic energy of an object with
Question : Select the most appropriate option that can substitute the underlined segment in the following sentence.
As the storm raged outside, the children huddled together under blankets, listening to the sound of the rain hitting the windows hard and hoping that the power wouldn't go out.
Option 1: climbing up to the windows
Option 2: setting off the windows
Option 3: pounding against the windows
Option 4: beating off the windows
Correct Answer: pounding against the windows
Solution : The most appropriate option is the third option.
Explanation: The most appropriate option to substitute the underlined segment is pounding against the windows. This effectively conveys the intensity of the storm, as it describes the rain hitting the windows with
Question : The value of the expression $\sin^{2}1^{\circ}+\sin^{2}11^{\circ}+\sin^{2}21^{\circ}+\sin^{2}31^{\circ}+\sin^{2}41^{\circ}+\sin^{2}45^{\circ}+\sin^{2}49^{\circ}+\sin^{2}59^{\circ}+\sin^{2}69^{\circ}+\sin^{2}79^{\circ}+\sin^{2}89^{\circ}$ is:
Option 1: $0$
Option 2: $5\frac{1}{2}$
Option 3: $5$
Option 4: $4\frac{1}{2}$
Correct Answer: $5\frac{1}{2}$
Solution : $\sin^{2}1^{\circ}+\sin^{2}11^{\circ}+\sin^{2}21^{\circ}+\sin^{2}31^{\circ}+\sin^{2}41^{\circ}+\sin^{2}45^{\circ}+\sin^{2}49^{\circ}+\sin^{2}59^{\circ}+\sin^{2}69^{\circ}+\sin^{2}79^{\circ}+\sin^{2}89^{\circ}$ Using the identity $\sin(90^{\circ} - \theta) = \cos\theta$, we get, $\sin^{2}49^{\circ}=\sin^{2}(90^\circ-41^{\circ}) = \cos^2{41}^\circ$ $\sin^{2}59^{\circ}=\sin^{2}(90^\circ-31^{\circ}) = \cos^2{31}^\circ$ $\sin^{2}69^{\circ}=\sin^{2}(90^\circ-21^{\circ}) = \cos^2{21}^\circ$ $\sin^{2}79^{\circ}=\sin^{2}(90^\circ-11^{\circ}) = \cos^2{11}^\circ$ $\sin^{2}89^{\circ}=\sin^{2}(90^\circ-1^{\circ}) = \cos^2{1}^\circ$ $=\sin^{2}1^{\circ}+\sin^{2}11^{\circ}+\sin^{2}21^{\circ}+\sin^{2}31^{\circ}+\sin^{2}41^{\circ}+\sin^{2}45^{\circ}+\cos^{2}41^{\circ}+\cos^{2}31^{\circ}+\cos^{2}21^{\circ}+\cos^{2}11^{\circ}+\cos^{2}1^{\circ}$Each pair adds up to $1$ because $\sin^{2}\theta + \cos^{2}\theta = 1$ $=5+\sin^{2}45^{\circ}$ $=5+\frac{1}{2}$ $=\frac{11}{2}=5\frac{1}{2}$ Hence, the correct answer
Question : Directions: Which of the answer figures is embedded in the question figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Because there is no restriction on the rotation of the figure, we will check all possible orientations of the option figures to determine which one may fit in the question figure. By comparison of all the option figures, only the third option figure is embedded in
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