Staff Selection Commission Sub Inspector Exam
Question : In a store, Arun has two options to buy a mobile phone, either he can pay the full amount of Rs. 2,500 or he may buy at an instalment scheme, i.e. Rs. 520 in down payment and four equal instalments, rate of interest is charged at 25% p.a. simple interest. Arun buys a mobile phone on an instalment scheme. What is the monthly instalment for Arun?
Option 1: Rs. 510
Option 2: Rs. 530
Option 3: Rs. 550
Option 4: Rs. 520
Correct Answer: Rs. 520
Solution : Full amount = Rs. 2,500 Down payment = Rs. 520 Remaining amount = 2,500 – 520 = Rs. 1980 Rate of interest = 25% per annum = $\frac {25}{12}$% per month Let the four equal monthly instalments be $x$. Total interest paid $=4x-1980$ Interest
Question : A sum of INR 1,00,000 was taken from a bank at the rate of 7% p.a to be compounded annually for 5 years. Calculate the compound interest. (Closest to an INR)
Option 1: INR 40,000
Option 2: INR 20,963
Option 3: INR 40,567
Option 4: INR 40,255
Correct Answer: INR 40,255
Solution : Given: Principal = INR 100000 Rate = 7% Time = 5 years We know that, $CI= P((1+\frac{R}{100})^{T}-1)$ $= 100000((1+\frac{7}{100})^{5}-1)$ $= 100000((\frac{107}{100})^{5}-1)$ $= 100000(\frac{14025517307}{10000000000}-1)$ $= 100000(\frac{14025517307-10000000000}{10000000000})$ $= 100000(\frac{4025517307}{10000000000})$ $= \frac{4025517307}{100000}$ $= 40255.17307$ = 40255 (Closest to an INR) Hence, the correct answer is INR 40255.
Question : Directions: Eight people are sitting in two parallel rows with 4 people each in such a way that there is equal distance between adjacent persons. In Row I – 1, 2, 3, and 4 are seated and all of them are facing south. In Row II – 6, 7, 8, and 9 are seated and all of them are facing north. 1 and 2 are not seated at the extreme ends and 1 sits to the immediate left of 2. 9 and 7 sit opposite 1 and 2 and 7 sit exactly opposite 1. 7 is not the immediate neighbour of 6. Who sits at the extreme right corner of Row II facing north?
Option 1: 8
Option 2: 7
Option 3: 9
Option 4: 6
Correct Answer: 8
Solution : From the given statement, the seating arrangement is as follows –
So, 8 sits at the extreme right corner of Row II facing north. Hence, the first option is correct.
Question : Who spoke : " At the stroke of midnight , when the world sleeps , India awakes to life and freedom " ?
Option 1: Netaji Subhas Chandra Bose.
Option 2: Mahatma Gandhi .
Option 3: Jawaharlal Nehru .
Option 4: C.Rajagopalachari .
Correct Answer: Jawaharlal Nehru .
Solution : Correct Answer is Jawaharlal Nehru .
Jawaharlal Nehru, the nation's first prime minister, addressed the Indian Constituent Assembly in the Parliament in English at around midnight on August 14, 1947, the eve of India's independence. The topic of the speech was "Tryst with
Question : What is the curved surface area (in cm2) of a cylinder having a radius of base as 14 cm and height as 10 cm?
Option 1: 440
Option 2: 880
Option 3: 220
Option 4: 1320
Correct Answer: 880
Solution : Given: r = 14 cm and h = 10 cm The curved surface area of a cylinder $= 2\pi rh$ The curved surface area of a cylinder $ = 2\times\frac{22}{7} \times 14 \times 10 = 880\, \text{cm}^2$ Hence, the correct answer is 880.
Question : Which Commission was appointed by the central government to examine issues related to Centre-State relations?
Option 1: Sarkaria Commission
Option 2: Mandal Commission
Option 3: Nanavati Commission
Option 4: Kothari Commission
Correct Answer: Sarkaria Commission
Solution : The correct answer is the Sarkaria Commission
The Indian central government established the Sarkaria Commission in June 1983. Its mandate was to draft amendments to the Indian Constitution while also analysing the nation's state-central power dynamics and their respective balances.
Question : $(\sqrt[3]{1000}+ \sqrt[3]{0.008}+\sqrt[3]{0.125})$ is equal to:
Option 1: $10.7$
Option 2: $9.97$
Option 3: $9.997$
Option 4: $9.9997$
Correct Answer: $10.7$
Solution : Given: $(\sqrt[3]{1000}+ \sqrt[3]{0.008}+\sqrt[3]{0.125})$ $\sqrt[3]{1000} = 10$ $\sqrt[3]{0.008} = 0.2$ $\sqrt[3]{0.125} = 0.5$ Putting these values, we get: $10 + 0.2 + 0.5 = 10.7$ Hence, the correct answer is $10.7$.
Question : Directions: The average age of 19 boys in a class is 21 years. If the teacher's age is included, the average increases to 22 years. What is the teacher's age?
Option 1: 39 years
Option 2: 41 years
Option 3: 40 years
Option 4: 44 years
Correct Answer: 41 years
Solution : Given: The average age of 19 boys in a class is 21 years.
Average⇒(Sum of ages of 19 boys) ÷ 19 = 21 So, the sum of the ages of 19 boys = 19 × 21 = 399
The average age of 19 boys
Question : Directions: In the given figure, which letter represents carnivorous plants that are not green?
Option 1: d
Option 2: g
Option 3: e
Option 4: f
Correct Answer: d
Solution : The region that represents carnivorous plants is d and g. But we need to find out those carnivorous plants that are not green. This means that the g region will not be considered. The shaded region is common to both carnivorous and plants, but uncommon
Question : Directions: In the given question, there are four given figures, out of which three are similar in some manner and one is not like the others. Select the figure which is the odd one out.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : The logic followed in the given options is as follows –
Here, all figures have the same number of squares, and the same number of horizontal and vertical lines, but only in the third option, a slant line is present in the square.
Hence, the third
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