Correct Answer: Tamil

Solution : The correct answer is Tamil.

Tolkappiyar was a renowned grammarian of the Tamil language. He is the author of the Tolkappiyam book, the oldest surviving Tamil grammar. Tolkappiyam is a collection of poems and prose written by Tolkappiyar, one of the disciples of Agattiyar.

Correct Answer: 68

Solution : Given:

The pattern can be observed running horizontally along the rows –
Row 1: √(36) + 49 = 6 + 49 = 55
Row 2: √(64) + 39 = 8 + 39 = 47
Row 3: 

Correct Answer: gsfti

Solution : Given:
HAPPY : ibqqz :: FRESH : ?

Add 1 to the place value of each letter of HAPPY to obtain the required code –
H + 1 = i; A + 1 = b; P + 1 = q; P + 1 = q;

Correct Answer: Random

Solution : The correct choice is the first option.

Explanation: Random is an appropriate synonym for haphazard because both of the words convey the idea of lacking a systematic or organised approach. They both suggest a lack of planning or order in the arrangement or occurrence

Correct Answer: $0.4$

Solution : Given: $\frac{(0.5)^{3}-(0.1)^{3}}{(0.5)^{2}+0.5\times 0.1+(0.1)^{2}}$
By using the identity: $a^3-b^3=(a-b)(a^2+ab+b^2)$, the above expression can be written as:
$\frac{(0.5-0.1)(0.5^{2}+0.5\times 0.1+0.1^{2})}{(0.5)^{2}+0.5\times 0.1+(0.1)^{2}}$
= $0.5-0.1$
= $0.4$
Hence, the correct answer is $0.4$.

Correct Answer: curtesy

Solution : The correct choice is the fourth option.

Explanation: In this case, the correct spelling of the word relating to polite behaviour or gesture is courtesy. The wrongly spelt word is curtesy. The term should be spelled courtesy. The error is that there should be

Correct Answer: 57 : 68

Solution : Given:
13 : 24 :: ? : ?

Here, the difference between the numbers of both pairs is 11.
Like, 13 : 24→24 – 13 = 11
Let's check the options – 
First option: 45 : 79; 79 – 45 = 34 ≠

Correct Answer: 234

Solution : Given:
184 : 207 :: 208 : ?

Here, 184 : 207→184 ÷ 8 = 23 and 207 ÷ 9 = 23
Divide the first number by 8 and the second number by 9 and after division the answer obtained is the same in both

Correct Answer: 42

Solution : Let the third number be $x$.
According to the question,
The second number $= 3x$ and the first number $= 6x$.
So, $6x + 3x + x = 3 × 20$ (Sum of all three numbers)
⇒ $10x = 60$
⇒ $x = 6$
Therefore,

Correct Answer: 5, 4, 2, 1, 3

Solution : Given:
1. Kilogram  2. Gram  3. Quintal  4. Decigram  5. Milligram

The given words are related to the weight measurements, so we can arrange them in increasing or decreasing order of weights as –
Convert all values in grams –
1.