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Staff Selection Commission Sub Inspector Exam

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Question : A solid lead sphere of radius 11 cm is melted and recast into small solid spheres of radius 2 cm each. How many maximum numbers (in integers) of such spheres can be made?

Option 1: 125

Option 2: 166

Option 3: 30

Option 4: 100

Team Careers360 24th Jan, 2024

Correct Answer: 166


Solution : According to the question
Number of small spheres = $\frac{\text{Volume of solid sphere}}{\text{Volume of small sphere}}$
= $\frac{\frac{4}{3}\pi (11)^{3}}{\frac{4}{3}\pi (2)^{3}}$
= $\frac{1331}{8}$
= $166.375 \approx 166$
Hence, the correct answer is 166.

13 Views

Question : Directions: Arrange the given words in the sequence in which they occur in the dictionary.
1. Nailed
2. Nailgn
3. Magazine
4. Monkey
5. Mend

Option 1: 35412

Option 2: 34521

Option 3: 34512

Option 4: 35142

Team Careers360 13th Jan, 2024

Correct Answer: 35412


Solution : Given:
1. Nailed   2. Nailgn   3. Magazine   4. Monkey   5. Mend

Step 1: The first letter of each word is – N, N, M, M, M. Based on the alphabetical order of these letters, we can arrange them – Magazine, Monkey, Mend, 

33 Views

Question : Directions: Select the option related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
21 : 40 :: 16 : ? :: 26 : 50

Option 1: 25

Option 2: 40

Option 3: 30

Option 4: 35

Team Careers360 24th Jan, 2024

Correct Answer: 30


Solution : Given:
21 : 40 :: 16 : ? :: 26 : 50

Subtract 1 from the number given in the first term, and then multiply the resultant by 2, to get the second term –
Like, 21 : 40→(21 – 1) × 2 = 20

14 Views

Question : Select the most appropriate option that can substitute the underlined segment in the given sentence.

I like to meeting of people who have travelled widely.

Option 1: like meeting people

Option 2: like meet to people

Option 3: like to be meeting people

Option 4: will like meeting with people

Team Careers360 12th Jan, 2024

Correct Answer: like meeting people


Solution : The first option is correct.

Explanation: The verb like is followed by the gerund form of the verb when expressing enjoyment or preference for an activity. In this case, the correct construction is like meeting, where meeting is the gerund form of

14 Views

Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.

18 21 24
24 33 27
12 ? 16
16 22 18

Option 1: 36

Option 2: 32

Option 3: 42

Option 4: 38

Team Careers360 12th Jan, 2024

Correct Answer: 42


Solution : Given:

18 21 24
24 33 27
12 ? 16
16 22 18


Multiply the third number and the fourth number of the column by 1.5 to obtain the first and the second number.

In first column; 12 × 1.5 = 18; 16 × 1.5

22 Views

Question : If $x$ and $y$ are real numbers, then the least possible value of $4 (x -2)^2+ (y-3)^2-2 (x-3)^2$ is:

Option 1: 3

Option 2: –4

Option 3: 1

Option 4: –8

Team Careers360 8th Jan, 2024

Correct Answer: –4


Solution : Given: $x$ and $y$ are real numbers.
The expression is $4 (x -2)^2+ (y -3)^2-2 (x-3)^2$
Use the algebraic identity, $(a-b)^2=a^2+b^2-2ab$
For the least possible value, substitute $(y-3)^2=0$
⇒ $4 (x-2)^2+0-2 (x-3)^2$
$=4(x^2+4-2x)-2(x^2+9-6x)$
$=4x^2+16-8x-2x^2-18+12x$
$=2(x^2-1-2x)$
$=2(x^2+1-2x-2)$
$=2[(x-1)^2-2]$
For the least possible value, substitute $(x-1)^2=0$.

14 Views

Question : Leukaemia is a cancer of the:

Option 1: Lungs

Option 2: Uterus

Option 3: Skin

Option 4: Blood

Team Careers360 12th Jan, 2024

Correct Answer: Blood


Solution : The correct answer is Blood.

The rapid generation of aberrant white blood cells is the cause of leukaemia, a type of cancer that can be seen in the bone marrow and blood. These aberrant white blood cells hinder the bone marrow's capacity to generate red

15 Views

Question : The HCF of the two numbers is 29, and the other two factors of their LCM are 15 and 13. The smaller of the two numbers is:

Option 1: 377

Option 2: 406

Option 3: 435

Option 4: 464

Team Careers360 24th Jan, 2024

Correct Answer: 377


Solution : The HCF of the two numbers is 29, and the other two factors of their LCM are 15 and 13.
So, numbers can be (29 × 13) and (29 × 15) i.e. 377 and 435
⇒ Smaller number = 377
Hence, the correct answer is

17 Views

Question : The value of $\frac{\sqrt{0.6912}+\sqrt{0.5292}}{\sqrt{0.6912}-\sqrt{0.5292}}$ is:

Option 1: 15

Option 2: 1.5

Option 3: 0.9

Option 4: 9

Team Careers360 15th Jan, 2024

Correct Answer: 15


Solution : $\frac{\sqrt{0.6912}+\sqrt{0.5292}}{\sqrt{0.6912}-\sqrt{0.5292}}$
$=\frac{\sqrt{6912}+\sqrt{5292}}{\sqrt{6912}-\sqrt{5292}}$
$=\frac{\sqrt{12×576}+\sqrt{12×441}}{\sqrt{12×576}-\sqrt{12×441}}$
$=\frac{\sqrt{576}+\sqrt{441}}{\sqrt{576}-\sqrt{441}}$
$=\frac{24+21}{24-21}$
$=\frac{45}{3}$
$=15$
Hence, the correct answer is 15.

14 Views

Question : Batholiths are landforms created by:

Option 1: groundwater

Option 2: volcanic activities

Option 3: fluvial action

Option 4: glaciers

Team Careers360 8th Jan, 2024

Correct Answer: volcanic activities


Solution : The correct answer is volcanic activities.

A batholith is a large body of igneous rock formed beneath the Earth's surface by the intrusion and solidification of magma. It is a discordant intrusion. It cools very slowly resulting in a coarse-grained structure. It is

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