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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 $\frac{\beta ^{3}}{\alpha ^{2}}$.
$\frac{\alpha^{3}}{\beta^{2}}+\frac{\beta^{3}}{\alpha^{2}}$
= $\frac{\alpha ^{5}+\beta^{5}}{\alpha^{2}\beta ^{2}}$
= $\frac{(\alpha ^{2}+\beta^{2}) \times(\alpha ^{3}+\beta^{3})-(\alpha ^{2}\beta ^{3}+\alpha ^{3}\beta ^{2})}{(\alpha\beta)^{2}}$

31 Views

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.

170 Views

Question : In the given sentence, identify the segment that contains a grammatical error.

Which member of your family you respect the most?

Option 1: you respect

Option 2: the most

Option 3: Which member

Option 4: of your family

Team Careers360 20th Jan, 2024

Correct Answer: you respect


Solution : The correct choice is the first option.

Explanation:
The sentence is a question, and it requires an auxiliary verb before the subject according to the rules of inversion followed in questions. Do is an auxiliary verb used in forming questions in the present

42 Views

Question : Directions: Select the correct option that indicates the arrangement of the following words in a logical and meaningful order.
1. Metre
2. Millimetre
3. 100 Metre
4. Centimetre
5. Kilometre

Option 1: 3, 5, 1, 4, 2

Option 2: 5, 3, 1, 4, 2

Option 3: 5, 2, 3, 1, 4

Option 4: 5, 3, 1, 2, 4

Team Careers360 20th Jan, 2024

Correct Answer: 5, 3, 1, 4, 2


Solution : Given:
1. Metre 2. Millimetre 3. 100 Metre 4. Centimetre 5. Kilometre

The arrangement of units in descending order is as follows –
From the given words the smallest unit is a metre and a metre is a metric unit of

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

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