Staff Selection Commission Combined Graduate Level Exam
Question : If the difference between the compound interest and simple interest on a sum of money for 3 years is Rs. 186, find the sum of money, if the interest rate in both cases is 10%.
Option 1: Rs. 5,500
Option 2: Rs. 7,200
Option 3: Rs. 6,500
Option 4: Rs. 6,000
Correct Answer: Rs. 6,000
Solution : Given: Difference = Rs. 186 Rate = 10% Time = 3 years By applying the formula for finding the difference between CI and SI: Difference = Principal$(\frac{R}{100})^2(\frac{R}{100}+3)$ ⇒ 186 = Principal$(\frac{10}{100})^2(\frac{10}{100}+3)$ ⇒ 186 = Principal$(\frac{1}{10})^2(\frac{1}{10}+3)$ ⇒ 186 = Principal$(\frac{1}{100})(\frac{31}{10})$ Principal = $(\frac{186×10×100}{31})$ = 6000
Question : Given below are four jumbled sentences. Select the option that gives their correct order forming a meaningful and coherent paragraph.
A. He tried covering himself from head to foot with a sheet, but that was suffocating, so he gave up. B. To his relief, Upen Babu found him a mosquito net. C. The next morning he told Upen Babu about his problem. D. Mosquitoes did not let him sleep the first night.
Option 1: DACB
Option 2: DCBA
Option 3: CDAB
Option 4: ADBC
Correct Answer: DACB
Solution : The correct choice is the first option.
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".
I welcome all the delegates (on behalf of) ABC Corporation.
(1) on the account of
(2) on the parts of
(3) for
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (4)
Solution : The correct choice is the fourth option.
The bracketed part of the sentence "on behalf of" is the correct choice to express that you are welcoming the delegates as a representative of ABC Corporation. None of the other options improve the sentence.
The correct answer
Question : Directions: Introducing a lady, a lady said, "She is the only daughter of Mohan's grandfather who is my husband's father". How does the lady relate herself to the introduced lady?
Option 1: Aunt
Option 2: Mother
Option 3: Mother-in-law
Option 4: Sister-in-law
Correct Answer: Sister-in-law
Solution : As per the given information, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.
So, from the above family tree, the lady is the sister-in-law of the introduced lady. Hence,
Question : A businessman's earnings increased by 25% in one year but decreased by 4% in the next. Going by this pattern, after 5 years, his total earnings would be Rs. 72,000. What is his present income?
Option 1: Rs. 10,000
Option 2: Rs. 80,000
Option 3: Rs. 40,000
Option 4: Rs. 54,000
Correct Answer: Rs. 40,000
Solution : Let the present income be Rs. $x$ According to the question, $x × 1.25 × 0.96 × 1.25 × 0.96 × 1.25 = 72000$ ⇒ $x = \frac{72000}{1.25 × 0.96 × 1.25 × 0.96 × 1.25}$ ⇒ $x = \frac{72000}{1.2 × 1.2 × 1.25}$
Question : Directions: If in a code GONE is written as ILPB, then how may CRIB be written in that code?
Option 1: EUKY
Option 2: EKUY
Option 3: EYUK
Option 4: EOKY
Correct Answer: EOKY
Solution : Given: GONE is written as ILPB.
Add two and subtract three alternatively to the place values of the letters of GONE, to get the code – G + 2 = I; O – 3 = L; N + 2 = P; E – 3 =
Question : Directions: In the following question, some parts of the sentence have errors, and some are correct. Find out which part of the sentence has an error. The number of that part is the answer. If a sentence is error-free, your answer is "No Error".
A study is going underway to determine the exact concentration of lead in the water supply.
(1) to determine the exact concentration
(2) No Error
(3) of lead in the water supply
(4) A study is going underway
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 4
Solution : The phrase "is going underway" is redundant because "underway" already means "in progress" or "being carried out." Therefore, it is not necessary to use both "going" and "underway" together. The corrected sentence is, "A study is underway to determine the exact concentration of lead in
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (60, 17, 13) (62, 14, 17)
Option 1: (56, 15, 13)
Option 2: (43, 9, 12)
Option 3: (55, 18, 9)
Option 4: (57, 15, 14)
Correct Answer: (56, 15, 13)
Solution : Given: (60, 17, 13); (62, 14, 17)
Add the second and third numbers and the sum is multiplied by 2 to obtain the first number in the given set of numbers – ⇒ (60, 17, 13)→17 + 13 = 30 × 2 =
Question : The base of a right pyramid is an equilateral triangle with a side of 8 cm, and its height is $30 \sqrt{3}$ cm. The volume (in cm$^3$ ) of the pyramid is:
Option 1: $240 \sqrt{3}$
Option 2: $360 \sqrt{3}$
Option 3: $480$
Option 4: $360$
Correct Answer: $480$
Solution : Volume of pyramid = $\frac{1}{3}$ × area of base × height = $\frac{1}{3}$ × area of equilateral triangle × height = $\frac{1}{3}×\frac{\sqrt3}{4}$ × (8)2 × $30 \sqrt{3}$ = $\frac{\sqrt3}{4}$ ×64 = 480 cm3 Hence, the correct answer is $480$.
Question : Identify the option that arranges the given parts in the correct order to form a meaningful paragraph.
A. In speed, in comfort, in beauty, in equipment she was a masterpiece. B. It was the envy and admiration of the maritime nations of the world. C. The Titanic was the Queen Alary of her day and the pride of the White Star Line. D. Everything about her was attractive and fascinating.
Option 1: CBAD
Option 2: ABCD
Option 4: DCAB
Correct Answer: CBAD
Solution : The correct choice is the first option: CBAD.
Explanation:
Sentence C introduces the Titanic, describing it as the Queen Alary of its day and the pride of the White Star Line. Sentence B follows logically, stating that the Titanic was the envy and admiration
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