Study HubHubPage 3/10Scan verified MCQs with the answer highlighted, then open explanations when you want the reasoning.
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Sum of odd integers
The sum of the first seventy positive odd integers is:
The sum of the first n positive odd integers is given by the formula n^2. For n = 70, the sum is 70^2 = 4900. The options given are 4960, 4970, 4980, and None of these. Since 4900 does not match any of the first three options, the correct answer is 'None of these'.
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Japanese currency
What is the name of the Japanese currency?
The official currency of Japan is the Yen, symbolized as ¥. It is distinct from the Yuan, which is the currency of China, and the Euro, used by many European countries.
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Centroid of triangle
The centroid of a triangle LMN with vertices L(1,1,1), M(3,3,3), and N(5,5,5) is the point:
The centroid of a triangle with vertices at points L(1,1,1), M(3,3,3), and N(5,5,5) is calculated by averaging the x, y, and z coordinates: ((1+3+5)/3, (1+3+5)/3, (1+3+5)/3) = (3,3,3). Thus, option A is correct.
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Tag question
When you argue with a friend, you don't go home and destroy every object that he ever touched, do you?
The sentence is a negative statement, so the tag question must be positive. "Do you" is the correct positive tag to match the negative statement. The other options do not fit grammatically or logically.
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Donald Trump presidency order
Donald Trump is the ------------- president of America?
Donald Trump was the 45th president of the United States. The question asks for the ordinal number of Donald Trump as president. The correct ordinal number is 45th, but this option is missing from the provided choices. The closest historically accurate ordinal number among the options is 44th, which corresponds to Barack Obama, the president immediately before Trump. Therefore, none of the options correctly state Trump as 45th, but option A (44th) is the closest and best available choice given the options.
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PRSS-1 launch
On which date did Pakistan launch the remote sensing satellite PRSS-1 from China?
Pakistan launched its remote sensing satellite PRSS-1 from China on 12th July 2018. This date is well-documented in official sources and news reports.
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MAO College founded
MAO College was founded in:
MAO College (Muhammad Ali Jinnah College) was founded in 1906. Therefore, option B is correct, and 'None of these' is incorrect.
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BRICS countries
BRICS countries comprise:
The BRICS countries are Brazil, Russia, India, China, and South Africa. This grouping is well-known in international relations and economics, representing major emerging economies.
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Mass-energy equivalence
Einstein's famous equation which states that mass and energy are interchangeable is:
Einstein's famous equation is E=mc², which expresses the equivalence of mass (m) and energy (E) with c representing the speed of light squared. This shows that mass can be converted into energy and vice versa.
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Planets visibility
Which planet is easily visible from the Earth?
Venus is the brightest planet visible from Earth and is easily seen with the naked eye, often called the 'Evening Star' or 'Morning Star'. Mercury and Mars are visible but not as prominently as Venus.