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Question : Directions: In the following question, select the missing number of the given series. 342, 365, 388, ?, 434, 457
Option 1: 430
Option 2: 411
Option 3: 425
Option 4: 435
Correct Answer: 411
Solution : Given: 342, 365, 388, ?, 434, 457
In the above-given series, add 23 to the previous number to get the next number. 342 + 23 = 365, 365 + 23 = 388, 388 + 23 = 411, 411 + 23 = 434, 434 + 23
Question : Identify the segment in the sentence which contains the grammatical error. If there is no error, select 'No error'
In about two weeks our holidays will start.
Option 1: No error
Option 2: In about two weeks
Option 3: will start
Option 4: our holidays
Correct Answer: No error
Solution : The correct choice is the first option.
The sentence contains no error and it conveys the intended meaning that the holidays will start in two weeks.
Therefore, the sentence is: "In about two weeks our holidays will start."
Question : What is the value of $4^{2}-3^{2}+6^{2}-5^{2}+8^{2}-7^{2}$?
Option 1: 30
Option 2: 33
Option 3: 3
Option 4: 27
Correct Answer: 33
Solution : $4^{2}-3^{2}+6^{2}-5^{2}+8^{2}-7^{2}$ $=(4+3)(4-3)+(6+5)(6-5)+(8+7)(8-7)$ $=7+11+15$ $=33$ Hence, the correct answer is 33.
Question : The population of a town is 1,25,000. If the annual birth rate is 12.7% and the annual death rate is 2.7%, how much will the population increase after 3 years?
Option 1: 43,285
Option 2: 41,375
Option 3: 42,565
Option 4: 40,275
Correct Answer: 41,375
Solution : The present population, $P$ = 1,25,000 Increase rate, $r$ = 12.7% – 2.7% = 10% Time, $n$ = 3 years Total population = $P(1+\frac{r}{100})^{n}$ = $125000(1+\frac{10}{100})^3$ = $125000(\frac{11}{10})^3$ = $125000×\frac{11}{10}×\frac{11}{10}×\frac{11}{10}$ = $166375$ $\therefore$ Population increase = 166375 – 125000 = 41,375 Hence, the correct answer
Question : 36 equally efficient workers can paint 25 identical walls in 48 days. In how many days can 45 such workers paint 60 such walls?
Option 1: 92.36
Option 2: 92.16
Option 3: 91.96
Option 4: 91.16
Correct Answer: 92.16
Solution : Given, 36 equally efficient workers can paint 25 identical walls in 48 days. ⇒ One worker can paint 25 walls in 48 × 36 ⇒ One worker can paint one wall in $\frac{48 × 36}{25}$ ⇒ $\frac{1728}{25}$ days ⇒ 45 workers can paint 1 wall
Question : Which of the following rivers has its origin in Mahabaleshwar?
Option 1: Kaveri
Option 2: Narmada
Option 3: Tapti
Option 4: Krishna
Correct Answer: Krishna
Solution : The correct option is Krishna.
The Krishna River has its origin in Mahabaleshwar. Mahabaleshwar is a hill station located in the Western Ghats in Maharashtra, India, and it is the source of the Krishna River. The Krishna River originates from a spring near the
Question : Select the most appropriate ANTONYM of the underlined word.
Everyone should be aware of the possibly greater potential for natural disasters where they live and what resources they have in case these happen.
Option 1: Maze
Option 2: Certainty
Option 3: Knot
Option 4: Neuter
Correct Answer: Certainty
Solution : The correct choice is the second option.
The most appropriate antonym for potential is certainty because potential implies possibility or capability while certainty means absolute assurance or confidence in the inevitability of something happening or the absence of doubt.
The meanings of other options
Question : Simple interest received by a person in 10 years on a principal of Rs. 8,500 is 180% of the principal. What is the annual rate of interest?
Option 1: 20%
Option 2: 22.5%
Option 3: 25%
Option 4: 18%
Correct Answer: 18%
Solution : Given: Simple Interest received by a person in 10 years on a principal of Rs. 8,500 is 180% of the principal. Let the annual rate of interest be $R$. 180% of principle = $\frac{8500\times 180}{100}$ ---------------(1) Use the formula, $SI=\frac{P\times R\times T}{100}$ where $SI$, $P$,
Question : A closed economy is one in which
Option 1: Does not trade with other countries
Option 2: Does not possess any means of international transport
Option 3: Does not have a coastal line
Option 4: Is not a member of the UNO
Correct Answer: Does not trade with other countries
Solution : The correct answer is Does not trade with other countries.
A closed economy does not trade with other countries, meaning it does not involve itself in imports, exports or any financial exchanges with other nations. Examples of closed economies
Question : Which of the following is found in plant cells only?
Option 1: Cell membrane
Option 2: Cell wall
Option 3: Nucleolus
Option 4: Mitochondria
Correct Answer: Cell wall
Solution : The correct option is the Cell wall.
The cell wall is the outer covering of a plant cell, present over the cell membrane. It is absent in animal cells. Instead, an animal cell has only a plasma membrane as its outer covering. The cell
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