Correct Answer: 22%

Solution : Given. Time = 18 years
Let the principal be $x$.
The sum of money after 18 years = $5x$
Simple interest = $5x-x=4x$
Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$
$⇒4x=\frac{x× \text{Rate}×18}{100}$
$\therefore$ Rate = $\frac{400}{18}=22.22\approx 22$%
Hence, the correct answer is 22%.

Correct Answer: Far and wide

Solution : The correct choice is the fourth option.

The idiom, far and wide means to a great extent or area. For example, they searched far and wide for the lost child, or the message went out far and wide.

Correct Answer: Deflate

Solution : Given:
Intelligent : Dumb :: Inflate : ?

Intelligent and dumb are antonyms.
Similarly, inflate and deflate are antonyms.

Hence, the second option is correct.

Correct Answer: Only A

Solution : The correct answer is Only A.

The repo rate is the interest rate that the central bank of a nation—in India, the RBI—uses to lend money to commercial banks in times of financial crisis. To control inflation and deflation, the Bank of India (RBI) uses a variety of monetary policy tools, including the market stabilisation scheme, cash reserve ratio (CRR), bank rate, repo rate, reverse repo rate, open market operations, statutory liquidity ratio (SLR), and liquidity adjustment facility (LAF).

Correct Answer: $1$

Solution : Given: Let the values of $\cos20°=m$ and $\cos70°=n$
If $A+B=90°$, then $\cos^2 A+\cos^2 B=1$
Here, $70°+20°=90°$
$m^2+n^2= \cos^2\ 20°+\cos^2\ 70°$
$⇒m^2+n^2= 1$
Hence, the correct answer is $1$.

Correct Answer: 1400

Solution : The perfect squares between 120 and 300 are 121, 144, 169, 196, 225, 256, and 289.
Thus, the sum of the numbers is 121 + 144 + 169 + 196 + 225 + 256 + 289 = 1400
Hence, the correct answer is 1400.

Correct Answer: Mid-latitude grasslands

Solution : The correct answer is Mid-latitude grasslands.

The biome known as the world's "Bread Basket" is often connected with Mid-Latitude Grasslands or Temperate Grasslands. These grasslands are noted for their high agricultural productivity, and are home to a substantial portion of the world's grain, and cereal crops, making them critical to global food production. The Great Plains of North America, the Pampas of South America, the Eurasian steppes, and sections of Australia are all examples.

Correct Answer: Quip

Solution : The correct choice is the third option.

The word jape refers to a joke or jest, often meant to be humorous or playful.

The word quip refers to a clever or witty remark, typically delivered quickly and intended to be amusing. Both share a similar meaning related to humour or jesting.

The meanings of the other options are as follows:

• Quick: Swift or fast.
• Quarrel: A verbal dispute or argument.
• Quit: to resign or stop.

Correct Answer: 999

Solution : Given:
TTT : 777 :: RRR : ?

Like, TTT : 777→Opposite letter of T is G with a place value of 7.
Similarly, for RRR : ?→Opposite letter pair of R is I with a place value of 9.

So, RRR is related to 999. Hence, the fourth option is correct.

Correct Answer: 44.93%

Solution : Given: The price of an article is cut by 31%.
Let the original price of the article be Rs.100.
Now, The price of an article is cut by 31%.
⇒ The new price of the article $=\frac{100-31}{100}\times 100= 69$
To restore its original value, the new price must be increased by:
⇒ $\frac{100-69}{69}\times 100=\frac{3100}{69}= 44.93\%$
Hence, the correct answer is 44.93%.