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Question : What is the value of $14^{3}+16^{3}+18^{3}+...+30^{3}$?
Option 1: 134576
Option 2: 120212
Option 3: 115624
Option 4: 111672
Correct Answer: 111672
Solution : Given: $14^{3}+16^{3}+18^{3}+.....+30^{3}$ $= 2^{3}\times7^{3}+2^{3}\times8^{3}+2^{3}\times9^{3}+.....+2^{3}\times15^{3}$ $= 2^{3}(7^{3}+8^{3}+9^{3}+.....+15^{3})$ $= 2^{3}[(1^{3}+2^{3}+3^{3}+4^{3}+....+15^{3})-(1^{3}+2^{3}+3^{3}+4^{3}+5^{3}+6^{3})]$ The sum of cubes of $n$ natural numbers$ =\left[\frac{n(n+1)}{2}\right]^2$ For $n = 6$, we have $1^{3}+2^{3}+3^{3}+4^{3}+5^{3}+6^{3}=\left[\frac{6(6+1)}{2}\right]^2 = \left[\frac{42}{2}\right]^2 = (21)^{2} =$ 441 For $n = 15$, we have $1^{3}+2^{3}+3^{3}+4^{3}+....+15^{3}=\left[\frac{15(15+1)}{2}\right]^2 = \left[\frac{240}{2}\right]^2 = (120)^{2} =$ 14400 Now, $2^{3}[(1^{3}+2^{3}+3^{3}+4^{3}+....+15^{3})-(1^{3}+2^{3}+3^{3}+4^{3}+5^{3}+6^{3})]$
Question : The typical natural vegetation above 3600 metres on the Himalaya is
Option 1: Alpine grassland
Option 2: alpine forests
Option 3: coniferous forests
Option 4: subtropical pine forests
Correct Answer: Alpine grassland
Solution : The Correct Answer is- Alpine grassland
Alpine grassland dominates the Himalayan mountains' typical natural vegetation above 3600 meters. Silver fur, pine birch, and other important trees are listed. A natural alpine grassland at a high elevation, the Alpine-steppe is a subregion of the Montane
Question : The basic objective of all production is to:
Option 1: satisfy human wants
Option 2: provide employment
Option 3: make profit
Option 4: increase physical output
Correct Answer: satisfy human wants
Solution : The correct answer is to satisfy human wants.
The fundamental goal of all manufacturing is to generate commodities and services that fulfil human desires and needs. To put it another way, the primary goal of production is to create items that may
Question : The toxic metal associated with the Minamata disease is:
Option 1: lead
Option 2: cadmium
Option 3: arsenic
Option 4: mercury
Correct Answer: mercury
Solution : The correct option is mercury.
The Minamata incident occurred in the 1950s, and 1960s in Minamata, Japan, as a result of a chemical factory controlled by the Chisso Corporation releasing methylmercury into the waters of Minamata Bay. The deadly mercury compound made its way
Question : Direction: Following is the pie chart showing the result of the survey among 119060 people concerning tobacco. Study the pie diagram and answer the following question.
The number of cigarette-smoking people is greater than the number of pipe-smoking people
Option 1: 29,765
Option 2: 47,624
Option 3: 11,906
Option 4: 59,530
Correct Answer: 47,624
Solution : Total number of people = 1,19,060 Degree subtended by number of people smoking cigarettes = 180$^\circ$ Degree subtended by number of people smoking pipe = 36$^\circ$ The number of cigarette-smoking people is greater than the number of pipe-smoking people = $\frac{180^\circ-36^\circ}{360^\circ}\times 119060=\frac{144^\circ}{360^\circ}\times 119060$ = 47624
Question : Which of the following is consistent with the import substitution policy?
Option 1: Capital account convertibility
Option 2: Flexible exchange rate policy
Option 3: Tariffs and quotas
Option 4: Current account convertibility
Correct Answer: Tariffs and quotas
Solution : The correct option is Tariffs and quotas.
Both tariffs and quotas are consistent with import substitution policies. Import substitution is an economic policy that aims to promote domestic industries by reducing reliance on imported goods. Tariffs involve imposing taxes on imported goods,
Question : If $p^2+q^2=7pq$, then the value of $\frac{p}{q}+\frac{q}{p}$ is equal to:
Option 1: 9
Option 2: 5
Option 3: 7
Option 4: 3
Correct Answer: 7
Solution : Given: $p^2+q^2=7pq$ Divide the above equation by $pq$ on both sides, we get, ⇒ $\frac{p^2+q^2}{pq}=\frac{7pq}{pq}$ ⇒ $\frac{p}{q}+\frac{q}{p}=7$ Hence, the correct answer is 7.
Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer.
You must __________your career with all seriousness.
Option 1: pursue
Option 2: follow
Option 3: complete
Option 4: direct
Correct Answer: pursue
Solution : "Pursue" means to actively and diligently work towards a goal or objective, which is exactly the action one should take with their career. Therefore, the correct word to fill in the blank is "pursue."
Question : If the sum of a non-zero number and thrice its reciprocal is $\frac{52}{7}$. Find the number.
Option 1: 8
Option 2: 9
Option 4: 6
Solution : Given: The sum of a non-zero number and thrice its reciprocal is $\frac{52}{7}$. Let the number be $x$. According to the question, $x+\frac{3}{x}=\frac{52}{7}$ $\Rightarrow 7x^2-52x+21=0$ $\Rightarrow (7x-3)(x-7)=0$ $\Rightarrow (7x-3)$ or $(x-7)=0$ $\Rightarrow x=7$ or $ \frac{3}{7}$ After checking the options, we get, $x=7$ Hence, the
Question : Select the most appropriate meaning of the given idiom.
Leave no stone unturned
Option 1: To act in a strange manner
Option 2: Make all possible efforts
Option 3: To get fired from the job
Option 4: Not willing to accept the ideas of others
Correct Answer: Make all possible efforts
Solution : The correct choice is the second option.
Explanation: This phrase implies putting in exhaustive effort, leaving nothing overlooked or unexplored, to achieve a particular goal. It suggests thoroughness and determination in pursuing something.
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