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16 Views

Question : If $\theta$ be an acute angle and $\tan \theta+\cot \theta=2$, then the value of $2 \tan ^2 \theta+\cot ^2 \theta+\tan ^4 \theta \cot ^4 \theta$ is:

Option 1: 4

Option 2: 2

Option 3: 3

Option 4: 6

Team Careers360 22nd Jan, 2024

Correct Answer: 4


Solution : Given, $\tan \theta+\cot \theta=2$
We know, $\cot\theta=\frac{1}{\tan\theta}$
⇒ $\tan\theta+\frac{1}{\tan\theta}=2$
⇒ $\tan^2\theta+1=2\tan\theta$
⇒ $\tan^2\theta+1-2\tan\theta=0$
⇒ $(\tan\theta-1)^2=0$
⇒ $\tan\theta-1=0$
⇒ $\tan\theta = 1$ [As $\theta$ is an acute angle]
⇒ $\cot\theta=1$
Now consider, $2 \tan ^2 \theta+\cot ^2 \theta+\tan ^4 \theta \cot ^4 \theta$
= $2\times(1)^2+1^2+(1)^4\times(1)^4$
=

15 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".

Dumbfounded by the accusation, he could offer no serious defence.

(1) correct

(2) certain

(3) severe

(4) No Improvement

Option 1: (1)

Option 2: (2)

Option 3: (3)

Option 4: (4)

Team Careers360 23rd Jan, 2024

Correct Answer: (4)


Solution : The correct choice is the fourth option.

In this sentence, the word "serious" is used correctly and appropriately to convey the intended meaning. It indicates that the person was deeply shocked or bewildered by the accusation and, as a result, could not provide a substantial

31 Views

Question : Which of the following devices is generally used to check multiple choice questions ?

Option 1: OCR

Option 2: OMR

Option 3: MICR

Option 4: Bar Code Reader

Team Careers360 23rd Jan, 2024

Correct Answer: OMR


Solution : The correct answer is OMR.

An OMR (Optical Mark Recognition) scanner is a device that is often used to verify multiple-choice questions (MCQs). By recognising the presence or absence of marks in designated regions, OMR technology is particularly intended to identify and analyse marked replies

19 Views

Question : Select the most appropriate meaning of the given idiom.

In high spirits

Option 1: mad

Option 2: joyful

Option 3: angry

Option 4: hopeful

Team Careers360 22nd Jan, 2024

Correct Answer: joyful


Solution : The correct choice is the third option.

Explanation:
In high spirits is an idiom that means to be excited or very happy. It refers to being in a state of being cheerful or in a positive mood.

Therefore, the correct answer is, joyful.

7 Views

Question : Select the most appropriate option to fill in the blank.
Multi-client messaging systems make it easier to keep in_____________.

Option 1: dairy

Option 2: touch

Option 3: roll

Option 4: secret

Team Careers360 19th Jan, 2024

Correct Answer: touch


Solution : The second option is correct.

Explanation:
Keeping in touch implies regular communication, maintaining relationships, and staying updated with each other's lives or activities. Therefore, in the context of a multi-client messaging system, it's highlighting the ease of staying connected with multiple individuals or clients simultaneously,

40 Views

Question : Two boats go downstream in a river at a speed of 35 km/hr and 25 km/hr. The speed of the stream is 4 km/hr. The distance between both boats initially is 60 km. In how much time will they meet if the boats are going downstream?

Option 1: 10 hours

Option 2: 13 hours

Option 3: 6 hours

Option 4: 8 hours

Team Careers360 17th Jan, 2024

Correct Answer: 6 hours


Solution : The relative speed of both the boats = 35 km/hr – 25 km/hr = 10 km/hr
Distance = 60 km
⇒ Time = $\frac{\text{Distance}}{\text{Speed}}=\frac{60}{10}=6$ hours
Hence, the correct answer is 6 hours.

25 Views

Question : Three numbers are in the ratio 5 : 6 : 7. If the product of the number is 5670, then the greatest number is:

Option 1: 15

Option 2: 18

Option 3: 21

Option 4: 28

Team Careers360 17th Jan, 2024

Correct Answer: 21


Solution : Given: Three numbers are in the ratio 5 : 6 : 7.
Let the numbers be $5x,6x,$ and $7x$, respectively.
The product of the number is 5670.
According to the question,
$5x×6x×7x = 5670$
⇒ $x^{3}=\frac{5670}{5×6×7}$
⇒ $x^{3} = 27$
$\therefore x = 3$
$\therefore$

8 Views

Question : The Karma tribal dance form is associated with which of the following states?

Option 1: Chhattisgarh

Option 2: Goa

Option 3: Kerala

Option 4: Karnataka

Team Careers360 22nd Jan, 2024

Correct Answer: Chhattisgarh


Solution : The correct answer is Chhattisgarh.

Karma is a folk dance that is performed during the worship of the Karam Devta. It is famous in Chhattisgarh and is also performed in Jharkhand, MP, and Odisha. Karma is a tribal community dance that is performed by

9 Views

Question : The Unlawful Activities (Prevention) Act, which provides for the more effective prevention of certain unlawful activities of individuals and associations dealing with terrorist activities, was first put into effect in India in the year ---------------------

Option 1: 1991

Option 2: 1967

Option 3: 2014

Option 4: 1947

Team Careers360 22nd Jan, 2024

Correct Answer: 1967


Solution : The correct answer is 1967.

The Unlawful Activities (Prevention) Act of 1967 aims at the effective prevention of unlawful activity associations in India. Unlawful activities mean any action done by any individual society or association that intends to disrupt the territorial integrity and sovereignty

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