Correct Answer: 72

Solution : Given:
1 @ 9 & 5 = 14 and 2 & 4 @ 3 = 14, then 7 @ 9 & 9 = ?

Find the operations from the given symbols in the equation.
The pattern in the equation is –
1 @ 9 &

Correct Answer: Obsolete

Solution : The fourth option is correct.

Explanation:
The one-word substitute for the group of words (no longer used because something new has been invented) is obsolete.
No longer used: This part indicates that something was once in use but is now abandoned or discontinued.

Correct Answer: 10

Solution : Given: 
40 + [{(24 – 12) × (2 ÷ 2)} + (18 × 10)] = ?

After interchanging the given mathematical signs, we get –
= 40 ÷ [{(24 + 12) – (2 × 2)} ÷ (18 – 10)]
= 40 ÷ [{36 – 4}

Correct Answer: $1$

Solution : $\frac{40-\frac{3}{4} \text { of } 32}{37-\frac{3}{4} \text { of }(34-6)}$
$=\frac{40-\frac{3}{4} \text { of } 32}{37-\frac{3}{4} \text { of }28}$
$=\frac{40-24}{37-21}$
$=\frac{16}{16}$
$=1$
Hence, the correct answer is $1$.

Correct Answer: Jogi, Vikrant and Saroj

Solution : Given:
(I) Six friends are sitting in two lines, one line behind the other line, and all the friends are facing north. Each line has three friends.

(II) Jogi is sitting between Vikrant and Saroj. Shrikant is sitting just behind Vikrant. Vaani

Correct Answer: Typhoid

Solution : The correct option is Typhoid.

Typhoid fever, also known as typhoid, is a bacterial infection caused by Salmonella enterica serotype Typhi. It is spread mostly through contaminated food and water, and it is common in places with poor sanitation, and hygiene practices.

Correct Answer: NOTS

Solution : Given:
SENTIMENT

Now, let's compare all the option words with the word SENTIMENT –
First option: SENT; All the letters of SENT are present in the word SENTIMENT.
Second option: MENT; All the letters of MENT are present in the word SENTIMENT.
Third option: TIME;

Correct Answer: Mother's mother

Solution : As per the given information, the family tree will be as follows –

Here, the quadrilateral represents the male and the circular figure represents the female in the figure.

So, from the above family tree, P is L's mother's mother. Hence, the first option

Correct Answer: contors

Solution : The third option is the correct answer.

The incorrectly spelled word in the sentence is "contors." The correct spelling is "contours," which means outlines or shapes, especially the outer edge of something.

The meanings of other options are as follows:

• Mysterious means difficult to understand

Correct Answer: (3)

Solution : The error lies in the third part of the sentence.

The phrase even less pleasant is used correctly, but the structure of the third part is awkward and unclear. To make it coherent, we can use the conjunction "for" to connect the two clauses, making