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Question : The current ages of Sonali and Monali are in the ratio 5 : 3. Five years from now, their ages will be in the ratio of 10 : 7. Determine Monali's current age.
Option 1: 5 years
Option 2: 3 years
Option 3: 9 years
Option 4: 15 years
Correct Answer: 9 years
Solution : Given: The current ages of Sonali and Monali are in the ratio 5 : 3. Five years from now, their ages will be in the ratio 10 : 7. Let the ages of Sonali and Monali be $5x$ years and $3x$ years respectively. As
Question : The area of a circle is 1386 cm2. What is the radius of the circle? [Use $\pi=\frac{22}{7}$ ]
Option 1: 21 cm
Option 2: 7 cm
Option 3: 14 cm
Option 4: 18 cm
Correct Answer: 21 cm
Solution : Given: The area of a circle = 1386 cm2 Also, the area of a circle = $\pi r^2$, where $r$ is the radius of the circle. ⇒ $1386=\frac{22}{7}\times r^2$ ⇒ $r^2 = 63\times7 $ ⇒ $r=21$ Hence, the correct answer is 21 cm.
Question : A polygon has 54 diagonals. The number of sides in the polygon is:
Option 1: 7
Option 2: 9
Option 3: 12
Option 4: 15
Correct Answer: 12
Solution : Let the number of sides be $n$. Then, number of diagonals of the polygon = $\frac{n(n-3)}{2}$ So, $\frac{n(n-3)}{2}=54$ ⇒ $n^2-3n=108$ ⇒ $n^2-3n-108=0$ ⇒ $(n-12)(n+9)=0$ ⇒ $n$ =12, the negative value is rejected. Hence, the correct answer is 12.
Question : The angles of a triangle are in the ratio 2 : 3 : 4. What is the largest angle of the triangle?
Option 1: $80^{\circ}$
Option 2: $100^{\circ}$
Option 3: $90^{\circ}$
Option 4: $120^{\circ}$
Correct Answer: $80^{\circ}$
Solution : Given: The angles of a triangle are in the ratio 2 : 3 : 4. The sum of angles of the triangle is $180^{\circ}$. The sum of the ratios = 2 + 3 + 4 = 9. Largest angle = $180^{\circ}\times\frac{4}{9}=80^{\circ}$. Hence, the correct answer
Question : 'Juno ' is the name of NASA's mission to
Option 1: Saturn
Option 2: Mars
Option 3: Jupiter
Option 4: None of these
Correct Answer: Jupiter
Solution : The correct answer is Jupiter
A basketball court's width wide, the NASA spacecraft Juno travels in looping, protracted orbits around the massive planet Jupiter. By revealing Jupiter's origin and evolution, Juno is helping us better understand the origins of the solar system. The planet's gravity
Question : The following pie chart shows the percentage expenditure of a country on different heads. The total expenditure is 1,680 (in billions). Study the chart and answer the question.
The total amount of expenditure for education and Health (in billions) is:
Option 1: 168
Option 2: 126
Option 3: 186
Option 4: 84
Correct Answer: 168
Solution : Education = 6% Health = 4% According to the question Total expenditure for education and health = 6% + 4% = 10% = 10% of 1680 = $\frac{10 \times 1680}{100}$ = 168 Hence, the correct answer is 168.
Question : Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select ‘No improvement required’.
Mrs. Dhar teach in this school for the last ten years.
Option 1: was teaching
Option 2: has been teaching
Option 3: No improvement required
Option 4: had taught
Correct Answer: has been teaching
Solution : The correct choice is the second option.
Explanation:
The sentence has a verb tense error. The present perfect continuous tense is suitable for indicating an action that started in the past, has continued into the present, and may continue.
Therefore, the
Question :
The types of kidneys present in frog are:
Option 1:
Mesonephros
Option 2:
Metanephros
Option 3: Archinephros
Option 4: Pronephros
Correct Answer:
Solution : The correct option is Mesonephros.
Like the majority of amphibians, frogs have two kidneys. These kidneys, known as mesonephric kidneys, fall somewhere between the more simple pronephric kidneys and the more sophisticated metanephric kidneys found in mammals in terms of complexity. The frog's mesonephric kidneys
Question : Select the correct active voice for the given sentence.
What should be done with my hands when I speak in public?
Option 1: What should I do when I speak with my hands in public?
Option 2: What shall I do when I speak with my hands in public?
Option 3: What should be done when I speak in public with my hands?
Option 4: What should I do with my hands when I speak in public?
Correct Answer: What should I do with my hands when I speak in public?
Solution : The correct answer is the fourth option,
Explanation: Active voice is a sentence construction where the subject performs the action expressed by the verb. It is direct and concise, with the subject acting
Question : Directions: If 18th October 2006 was Wednesday, then what was the day of the week on 17th October 2000?
Option 1: Tuesday
Option 2: Wednesday
Option 3: Monday
Option 4: Sunday
Correct Answer: Tuesday
Solution : Given: 18th October 2006 = Wednesday.
In a normal year, we have one odd day; in a leap year, we have two odd days. So, the total odd days – 18th October 2000 to 18th October 2001→1 odd day 18th October 2001 to 18th October
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