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Staff Selection Commission Combined Graduate Level Exam

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Question : If $\alpha$ and $\beta$ are the roots of equation $x^{2}-2x+4=0$, then what is the equation whose roots are $\frac{\alpha ^{3}}{\beta ^{2}}$ and $\frac{\beta ^{3}}{\alpha ^{2}}?$

Option 1: $x^{2}-4x+8=0$

Option 2: $x^{2}-32x+4=0$

Option 3: $x^{2}-2x+4=0$

Option 4: $x^{2}-16x+4=0$

Team Careers360 22nd Jan, 2024

Correct Answer: $x^{2}-2x+4=0$


Solution : Given: $\alpha$ and $\beta$ are roots of the equation $x^{2}-2x+4=0$
⇒ $\alpha+\beta=2$ and $\alpha\beta=4$
Now we need to find the equation whose roots are $\frac{\alpha ^{3}}{\beta ^{2}}$ and $\frac{\beta ^{3}}{\alpha ^{2}}$.
$\frac{\alpha^{3}}{\beta^{2}}+\frac{\beta^{3}}{\alpha^{2}}$
= $\frac{\alpha ^{5}+\beta^{5}}{\alpha^{2}\beta ^{2}}$
= $\frac{(\alpha ^{2}+\beta^{2}) \times(\alpha ^{3}+\beta^{3})-(\alpha ^{2}\beta ^{3}+\alpha ^{3}\beta ^{2})}{(\alpha\beta)^{2}}$

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Question : If the HCF of two numbers is 8, then which of the following can never be their LCM?

Option 1: 56

Option 2: 48

Option 3: 42

Option 4: 40

Team Careers360 20th Jan, 2024

Correct Answer: 42


Solution : Since the HCF of two numbers is 8,
LCM of the two numbers will only be a multiple of 8.
So, the LCM can be 56, 48, and 40 but never be 42.
Hence, the correct answer is 42.

31 Views

Question : Parts of the following sentence have been given as options. Select the option that contains a grammatical error.

He was / paid handsomely for / his ability to handle / the crowd skillful.

Option 1: paid handsomely for

Option 2: his ability to handle

Option 3: the crowd skillful.

Option 4: He was

Team Careers360 21st Jan, 2024

Correct Answer: the crowd skillful.


Solution : The third option is the correct choice.

Explanation: The error lies in the use of the adjective skillful to modify the noun crowd. The correct form should be the adverb skillfully to modify the verb handle. Adverbs are used to modify

20 Views

Question : In C language, the formatting character should be preceded by the symbol:

Option 1: +

Option 2: /

Option 3: %

Option 4: -

Team Careers360 19th Jan, 2024

Correct Answer: %


Solution : The correct option is %.

Formatting characters in C language must be preceded by the '%' sign. This symbol indicates that the next character(s) in the format string are placeholders for values that will be inserted into the formatted output using functions such as '

25 Views

Question : Rs. 2,420 were divided among A, B, and C so that A : B = 5 : 4 and B : C = 9 : 10. Then C gets:

Option 1: Rs. 680

Option 2: Rs. 800

Option 3: Rs. 900

Option 4: Rs. 950

Team Careers360 19th Jan, 2024

Correct Answer: Rs. 800


Solution : Given: Total sum = Rs. 2420
A : B = 5 : 4 = 45 : 36
B : C = 9 : 10 = 36 : 40
So, A : B : C = 45 : 36 : 40
Now, A + B

17 Views

Question : What does the term 'Ebola' stand for?

Option 1: A viral disease outbreak in West Africa.

Option 2: A viral disease outbreak in Bangladesh.

Option 3: A city in Syria was destroyed by ISIS.

Option 4: None of these

Team Careers360 21st Jan, 2024

Correct Answer: A viral disease outbreak in West Africa.


Solution : The correct option is A viral disease outbreak in West Africa.

The West African Ebola virus disease (EVD) epidemic, mainly in Guinea, Liberia and Sierra Leone, was a terrible event that happened between 2014 and 2016. The Ebola

11 Views

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 have (some sugar)?

(1) any sugar

(2) little sugar

(3) small sugar

(4) No Improvement

Option 1: (1)

Option 2: (2)

Option 3: (3)

Option 4: (4)

Team Careers360 20th Jan, 2024

Correct Answer: (4)


Solution : The correct choice is the fourth option.

"Some" is the correct determiner that correctly fits in the sentence, as "some" is used for indefinite quantity and sugar is an uncountable noun. Although the quantity is not defined, it implies a limited quantity.

Therefore, the correct

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Question : Two items A and B are sold at a profit of 10% and 15%, respectively. If the amount of profit received is the same, then the cost price of A and B may be:

Option 1: Rs. 1,000 and Rs. 1,500

Option 2: Rs. 5,000 and Rs. 2,000

Option 3: Rs. 3,000 and Rs. 2,000

Option 4: Rs. 3,000 and Rs. 5,000

Team Careers360 19th Jan, 2024

Correct Answer: Rs. 3,000 and Rs. 2,000


Solution : Let the cost price of item A as P and the cost price of item B as Q. 
Given that items A and B are sold at a profit of 10% and 15%, respectively, and the amount of profit received is

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