Staff Selection Commission Combined Higher Secondary Level Exam
Question : Find the difference between the Compound Interest and Simple Interest on Rs. 32,000 at 10% p.a. for 4 years.
Option 1: Rs. 2,051.20
Option 2: Rs. 2,052.50
Option 3: Rs. 2,025.20
Option 4: Rs. 2,501.20
Correct Answer: Rs. 2,051.20
Solution : Sum, P = Rs. 32,000 Rate, R = 10% Term, $n$ = 4 years When compounded annually, Compound Interest after n years = $P[(1+\frac{R}{100})^{n}–1]$ Compound Interest after 4 years = $32000[(1+\frac{10}{100})^{4}–1]$ = Rs.14,851.20 Simple Interest after n years = $\frac{PnR}{100}$ Simple Interest after 4
Question : Parts of the following sentence have been given as options. One of them may contain an error. Select the option that contains the error. If you don’t find any error, mark ‘No Error’ as your answer. In this world of competitions, every one of us is required to plan our course careful.
Option 1: every one of us is required
Option 2: No Error
Option 3: In this world of competitions
Option 4: to plan our course careful
Correct Answer: to plan our course careful
Solution : The correct choice is the fourth option.
The error in this sentence lies in the word "careful". The correct form should be "carefully".
The adverb "carefully" is needed to modify the verb "plan". When describing how someone plans their course, the
Question : Select the most appropriate option that can substitute the underlined segment in the given sentence.
I told Benny that the die was cast, and there was no further escape.
Option 1: the course of action ended and it couldn’t be restarted
Option 2: the course of action would never begin
Option 3: the course of action began and it could not be blocked
Option 4: the course of action yet to start and it could be postponed
Correct Answer: the course of action began and it could not be blocked
Solution : The correct choice is the third option.
The phrase, the die was cast is an idiom that means a decision or course of action has been irrevocably taken and cannot be changed.
Therefore, the correct
Question : Directions: Identify the number of triangles in the given figure.
Option 1: 10
Option 2: 7
Option 3: 8
Option 4: 9
Correct Answer: 10
Solution : The given figure can be labelled as shown below –
Now, in the above figure, there are 10 triangles. They are ABC, CEF, DEG, GFH, GHI, JHK, HLM, GLN, JLO, KOP.
Hence, the first option is correct.
Question : Raju and Sohan started a car race from the same point, in the same direction and at the same circular track of length 1725 m with speeds of 72 km/hr and 90 km/hr, respectively. After how much time (in seconds) will they meet again for the first time?
Option 1: 345 seconds
Option 2: 335 seconds
Option 3: 340 seconds
Option 4: 350 seconds
Correct Answer: 345 seconds
Solution : Given: Distance = 1725 m Relative speed between raju and sohan = 90 – 72 = 18 km/hr = $18\times \frac{5}{18}$ = 5 m/s $\therefore$ Time = $\frac{\text{Distance}}{\text{Speed}}=\frac{1725}{5}=345$ seconds Hence, the correct answer is 345 seconds.
Question : Directions: Town A and Town B were 600 km apart. Joshua left town A for town B and travelled at an average speed of 65 km/h. At the same time, Menon left town B for town A. The two of them met 5 hours later. Find Menon's average speed.
Option 1: 55 km/h
Option 2: 60 km/h
Option 3: 65 km/h
Option 4: 120 km/h
Correct Answer: 55 km/h
Solution : Given: Distance between town A and town B = 600 km Average speed of Joshua = 65 km/h Time taken = 5 hours
So, Joshua covered a distance of = Speed × Time = 65 × 5 = 325 km Distance to be covered
Question : Distant objects are visible as a little out of focus in this condition
Option 1: Presbyopia
Option 2: Hypermetropia
Option 3: Astigmatism
Option 4: Myopia
Correct Answer: Myopia
Solution : The correct answer is Myopia.
Nearsightedness, medically termed myopia, is a prevalent vision issue where close objects are clear but distant ones appear blurry. Conversely, if a person can see distant objects clearly but has difficulty with nearby objects, it is called hypermetropia or farsightedness.
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. 30, 24, 19, 15, 12, ?
Option 1: 6
Option 2: 8
Option 3: 10
Option 4: 11
Solution : Given: 30, 24, 19, 15, 12, ?
In the given series, subtract natural numbers in decreasing order starting from 6. 30 – 6 = 24; 24 – 5 = 19; 19 – 4 = 15; 15 – 3 = 12; 12 – 2 = 10
Question : Which of the following is a yellowish green to green coloured gemstone often found in mafic and ultramafic igneous rocks such as basalt, gabbro, dunite, diabase and peridotite?
Option 1: Bornite
Option 2: Olivine
Option 3: Tremolite
Option 4: Garnet
Correct Answer: Olivine
Solution : The correct option is olivine.
Olivine is a green to yellowish-green mineral commonly found in mafic and ultramafic igneous rocks, including basalt, gabbro, peridotite, and dunite. Its distinctive colour comes from its high iron content. Peridot, a gem-quality variety of olivine, is prized for
Question : Which one of the following depicts the correct chronological order in which the four major Lawn Tennis Tournaments are conducted annually
Option 1: Australian Open - French Open - U.S. Open - Wimbledon
Option 2: French Open - Australian Open - Wimbledon - U. S . Open
Option 3: Australian Open - French Open - Wimbledon - U. S. Open
Option 4: Wimbledon - Australian Open - French Open - U. S. Open
Correct Answer: Australian Open - French Open - Wimbledon - U. S. Open
Solution : The correct answer is Australian Open - French Open - Wimbledon - U. S. Open.
The Grand Slam schedule consists of- 1 The Australian Open in mid January, 2 The French Open from around late
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