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Question : In a school of 720 students, the ratio of boys to girls is 3 : 5. Find how many new boys may be allowed to the school if 18 new girls are admitted, so that the ratio of boys to girls changes to 2 : 3.
Option 1: 42
Option 2: 44
Option 3: 50
Option 4: 38
Correct Answer: 42
Solution : In a school of 720 students, the ratio of boys to girls is 3 : 5. ⇒ Number of boys in the school $= 720 × \frac{3}{3+5} =720 × \frac{3}{8}= 270$ ⇒ Number of girls in the school $= 720 × \frac{5}{3+5}=720 × \frac{5}{8}= 450$
Question : A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If everyone gets paid in proportion to the work done by them, the amount C will get is:
Option 1: Rs. 50
Option 2: Rs. 100
Option 3: Rs. 150
Option 4: Rs. 200
Correct Answer: Rs. 50
Solution : Given: A and B undertake a piece of work for Rs. 250. A's 1 day's work = $\frac{1}{5}$ B's 1 day's work = $\frac{1}{15}$ (A + B + C)'s 1 day's work = $\frac{1}{3}$ So, C's 1 day's work = $\frac{1}{3}-(\frac{1}{5}+\frac{1}{15})=\frac{1}{3}-\frac{4}{15}=\frac{1}{15}$ The ratio of
Question : The famous Battle of Talikota was fought in:
Option 1: 1565 AD
Option 2: 1575 AD
Option 3: 1585 AD
Option 4: 1570 AD
Correct Answer: 1565 AD
Solution : The correct option is 1565 AD.
On January 23, 1565, the forces of the Hindu king of Vijayanagara and the four allied Muslim sultanates of Bijapur, Bidar, Ahmednagar and Golconda fought in the Deccan area of southern India in the Battle of Talikota.
Question : Directions: A paper is folded and cut as shown below. How will it appear when unfolded?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like –
Hence, the fourth option is correct.
Question : If $x$ is prime number and $-1 \leq \frac{2x-7}{5} \leq 1$, then the number of values of $x$ is:
Option 1: 4
Option 2: 3
Option 3: 2
Option 4: 5
Correct Answer: 3
Solution : Given: $x$ is prime number and $-1 \leq \frac{2x-7}{5} \leq 1$. So, $-1 \leq \frac{2x-7}{5}$ $⇒-5 \leq 2x-7$ So, $1 \leq x$ Again, $\frac{2x-7}{5} \leq 1$ $⇒2x-7 \leq 5$ $\therefore x \leq 6$ Therefore, values of $x$ are 2, 3, and 5. [as $x$ is
Question : The main function of centriole is:
Option 1: to help plant cells with multiplication
Option 2: to help cell division in animal cells
Option 3: to maintain rigidity in plant cell
Option 4: to maintain mineral composition in bacterial cell
Correct Answer: to help cell division in animal cells
Solution : The correct answer is to help cell division in animal cells.
Animal cells' cytoplasm contains paired, barrel-shaped organelles called centrioles that are situated close to the nuclear envelope. The skeletal system of the cell is made up of microtubules,
Question : Directions: The sequence of folding a piece of paper and how the folded paper has been cut is shown below. Choose a figure which would most closely resemble the unfolded form of the paper.
Hence, the first option is correct.
Question : Under which scheme did Lieutenant Governor Manoj Sinha inaugurate "UMEED Market Place" in Jammu and Kashmir?
Option 1: Stand Up India Scheme
Option 2: Ujjwala Scheme
Option 3: AVSAR Scheme of the Airport Authority of India
Option 4: KUSUM Scheme
Correct Answer: AVSAR Scheme of the Airport Authority of India
Solution : The correct answer is the AVSAR Scheme of the Airport Authority of India.
Lieutenant Governor Manoj Sinha inaugurated the "UMEED Market Place" at Srinagar International Airport in Jammu and Kashmir under the AVSAR Scheme by the Airport Authority
Question : If the volume of a sphere is 38808 cm³, then its surface area is:
Option 1: 5554 cm²
Option 2: 5574 cm²
Option 3: 5564 cm²
Option 4: 5544 cm²
Correct Answer: 5544 cm²
Solution : Volume of sphere (radius = $r$) = 38808 cm$^3$ Volume of sphere = $\frac{4}{3}\pi r^3$ Surface Area of sphere = $4\pi r^2$ Calculation: ⇒ $\frac{4}{3}\pi r^3$ = 38808 ⇒ $\frac{4}{3}\times\frac{22}{7}\times r^3$ = 38808 ⇒ $r^3$ = $\frac{38808\times21}{88}$ ⇒ $r^3$ = 9261 ⇒ $r$ =
Question : Directions: In the following question, some parts of the sentence have errors, and some are correct. Find out which part of the sentence has an error. The number of that part is the answer. If a sentence is error-free, your answer is "No Error".
When one takes great risks, they must be prepared for great losses.
(1) they must be prepared
(2) When one takes great risks
(3) for great losses.
(4) No Error
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The first option is the correct choice.
Explanation: In the sentence, we have used "one" as an indefinite pronoun. Further in the sentence, we have also used "they", a third-person plural pronoun, to talk about the same person. This is erroneous, and "they" must
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