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Staff Selection Commission Combined Graduate Level Exam

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Question : If $a-b=2$ and $ab=15$, then what is the value of $a^3-b^3$?

Option 1: 152

Option 2: 112

Option 3: 108

Option 4: 98

Team Careers360 23rd Jan, 2024

Correct Answer: 98


Solution : Given:
$a-b=2, ab=15$
We know, $(a-b)^3=a^3-b^3-3ab(a-b)$
⇒ $2^3=a^3-b^3-3×15(2)$
⇒ $a^3-b^3=8+90$
$\therefore a^3-b^3=98$
Hence, the correct answer is 98.

49 Views

Question : Directions: If L + M means that L is the father of M, L × B means that L is the mother of M, and L – M means that L is the brother of M, then which of the following expressions shows that A is the paternal uncle of B?

Option 1: A – C + B

Option 2: A – B + C

Option 3: A + B – C

Option 4: A – B × C

Team Careers360 25th Jan, 2024

Correct Answer: A – C + B


Solution : Let's check the options –
First option: A – C + B
According to the given expression, the family tree will be as follows –

Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.

21 Views

Question : "yosemite" is a

Option 1: River

Option 2: Peak

Option 3: Waterfall

Option 4: Dam

Team Careers360 25th Jan, 2024

Correct Answer: Waterfall


Solution : The correct option is - 

With a total plunge of 2,425 feet from the top of the higher fall to the base of the lower fall, Yosemite Falls is the highest waterfall in Yosemite National Park. It is located  in the Sierra Nevada of California.

7 Views

Question : Directions: In the following question, from the given alternative words, select the word that can be formed using the letters of the given word.
CAPITULATE

Option 1: CAPABLE

Option 2: LUPIN

Option 3: PITTY

Option 4: TALE

Team Careers360 23rd Jan, 2024

Correct Answer: TALE


Solution : Given:
CAPITULATE

Now let's compare all the option words –
First option: CAPABLE; The letter B of the word CAPABLE is not present in the word CAPITULATE.
Second option: LUPIN; The letter N of the word LUPIN is not present in the word CAPITULATE.
Third

466 Views

Question : Directions: In a row of people all facing north, Prince is 5th from the right end. Amit is 15th from the right end. Amit is exactly between Prince and Aditya. If Aditya is sixth from the left end of the line, how many people are there in the row?

Option 1: 29

Option 2: 31

Option 3: 30

Option 4: 32

Team Careers360 22nd Jan, 2024

Correct Answer: 30


Solution : Given:
Prince is 5th from the right end.
Amit is 15th from the right end.
Amit is exactly between Prince and Aditya.
Aditya is sixth from the left end of the line.

→The number of people between Amit and Prince = (Position of Amit from

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Question : A coconut tree swings with the wind in such a manner that the angle covered by its trunk is 18°. If the topmost portion of the tree covers a distance of 44 metres, find the length of the tree. ( $\tan 18°$ = 0.3249).

Option 1: 120 metres

Option 2: 210 metres

Option 3: 140 metres

Option 4: 70 metres

Team Careers360 23rd Jan, 2024

Correct Answer: 140 metres


Solution :
Let the length of the tree be $l$ metres.
According to the question,
$2\pi l×\frac{18°}{360°}=44$
⇒ $\frac{44l}{7}×\frac{1}{20}=44$
⇒ $l=140$ metres
Hence, the correct answer is 140 metres.

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