Correct Answer: Indefatigable

Solution : The correct choice is the first option.

Indefatigable originates from fatigue, which means a feeling of constant exhaustion, and it is used to describe someone who shows untiring effort and remains diligent all the time. This makes it the correct one-word substitute for "one who does not get tired easily".

The meanings of the other options are as follows:

• A pedantic person is someone who gives too much attention to small details.
• A recluse lives alone and avoids going outside.
• A libertine person is one who has low moral values and has too many relationships with many people.

Correct Answer: Rs. 788.48

Solution : The formula for the difference between Compound Interest(CI) and Simple Interest(SI) for 3 years is given by:
$CI-SI=\frac{PR^{2}(300+R)}{100^{3}}$, where $P$ is principal and $R$ is rate of interest per annum compounded annually.
⇒ $CI-SI=\frac{40000\times8^{2}\times(300+8)}{100^{3}}$
⇒ $CI-SI=\frac{788480000}{1000000}$
$\therefore CI-SI=788.48$
Hence, the correct answer is Rs. 788.48.

Correct Answer: Statement 1 is true, but statement 2 is false.
   

Solution : The correct answer is (b) Statement 1 is true, but statement 2 is false.

Statement 1 is true. One of SEBI's main objectives is to protect the interests of investors by ensuring fair practices, market integrity, and transparency in transactions. They work to maintain a secure environment for investors.

Statement 2  is false. SEBI's protective functions are primarily focused on safeguarding the interests of investors and maintaining the integrity of the market. While a stable and transparent market can indirectly contribute to the profitability of companies, SEBI's primary concern is investor protection and market fairness rather than directly promoting company profitability.

Correct Answer: ACBD

Solution : The correct choice is the fourth option.

The paragraph starts by introducing the general concern about human relationships in sentence A. Then, it explains why these relationships are important, emphasising the benefits they bring to our lives in terms of coordination, balance, and approachability in sentence C. Following this, sentence B provides additional information about the elements that social scientists have identified as contributing to a good social life. Finally, sentence D concludes the paragraph by expressing concern about the current generation neglecting these elements and, as a result, risking happiness by leading a lonely life.