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Staff Selection Commission Sub Inspector Exam

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Question : Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:

Option 1: $4 \frac{4}{23}$ hours

Option 2: $6\frac{1}{5}$ hours

Option 3: $5\frac{5}{23}$ hours

Option 4: $7\frac{1}{2}$ hours

Team Careers360 23rd Jan, 2024

Correct Answer: $5\frac{5}{23}$ hours


Solution : Hourly work done by A = $\frac{1}{6}$
Hourly work done by B = $\frac{1}{8}$
Hourly work done by C = $\frac{1}{10}$
The tank can be filled by A, B, and C
= $\frac{1}{6}+\frac{1}{8}-\frac{1}{10}$
= $\frac{20+15-12}{120}$
= $\frac{23}{120}$
The tank can be filled in $\frac{120}{23}=5\frac{5}{23}$

27 Views

Question : The mean proportional of 0.04 and 0.36 is:

Option 1: 0.144

Option 2: 1.2

Option 3: 12

Option 4: 0.12

Team Careers360 24th Jan, 2024

Correct Answer: 0.12


Solution : Mean proportional of 0.04 and 0.36
= $\sqrt{0.04 × 0.36}$
= 0.12
Hence, the correct answer is 0.12.

13 Views

Question : Select the most appropriate ANTONYM of the given word.

FLEXIBLE

Option 1: elastic

Option 2: ductile

Option 3: pliable

Option 4: rigid

Team Careers360 24th Jan, 2024

Correct Answer: rigid


Solution : The correct choice is the fourth option.

Flexible is used to describe something that can easily be bent.

Rigid is something that does not lose its shape, even with the application of force. This makes it the correct antonym of the given word.

The

20 Views

Question : Select the INCORRECTLY spelt word in the given sentence.
It is beyond my cognative capacity to solve the mathematical problems.

Option 1: problems

Option 2: cognative

Option 3: mathematical

Option 4: capacity

Team Careers360 25th Jan, 2024

Correct Answer: cognative


Solution : The correct answer is the second option.

The incorrectly spelled word in the given sentence is "cognative". The correct spelling is "cognitive" and it refers to mental processes related to acquiring knowledge, understanding, and reasoning.

Therefore, the correct sentence should be: It is beyond my

12 Views

Question : Directions: Which of the following diagrams represents the correct relationship among Mammals, Cows, and Crows?

Option 1:

Option 2:

Option 3:

Option 4:

Team Careers360 24th Jan, 2024

Correct Answer:


Solution : Based on the general information, Cows come under the class of Mammals whereas Crows come under the class of Birds.
So, the circle representing Cows will lie inside the circle that represents Mammals, and the circle for Crows will not intersect with the other two circles.

18 Views

Question : ______ has become the 65th Indian Grandmaster at the age of 13.

Option 1: Prithu Gupta

Option 2: Raunak Sadhwani

Option 3: Rahul Vaid

Option 4: R. Praggnanandhaa

Team Careers360 23rd Jan, 2024

Correct Answer: Raunak Sadhwani


Solution : The correct answer is Raunak Sadhwani.

Raunak Sadhwani became the 65th Indian Grandmaster at the age of 13 years. The Grandmaster is the title award for the chess player by the world chess organisation FIDE (Federation Internationale des Echecs or International Chess Federation). 

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