Correct Answer: Need I

Solution : The correct option is the second option.

Explanation:
The reason is that it maintains the inversion often used in formal or archaic language. Inverted questions, where the auxiliary verb (need) comes before the subject (I), are common in more formal

Correct Answer: PRT

Solution : Let's check the options –
First option: DGI; D + 3 = G; G + 2 = I
Second option: JMO; J + 3 = M; M + 2 = O
Third option: PRT; P + 2 = R; R + 2 = T
Fourth

Correct Answer: UVZ

Solution : Let's check each option –
First option: UVZ; U + 1 = V; V + 4 = Z
Second option: MNP; M + 1 = N; N + 2 = P
Third option: XYA; X + 1 = Y; Y + 2 = A
Fourth

Correct Answer: ENIAC

Solution : The correct option is ENIAC.

The "ENIAC" (Electronic Numerical Integrator and Computer) is usually regarded as the first operating electronic digital computer. ENIAC was created during WWII and completed in 1945. It was a gigantic machine that took up a vast room, and its electronic

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

Solution : Given - 1. Frog    2. Eagle    3. Grasshopper    4. Snake    5. Grass

Here,

The correct order of the parts of a food chain is: 5. Grass, 3. Grasshopper, 1. Frog, 4. Snake, 2. Eagle.

Hence, third option is correct.

Correct Answer: $3 \mathrm{~cm}$

Solution : Given: The distance between the centres of two circles of radii 2 cm and 6 cm is 5 cm
The length of the direct common tangent between two circles $ = \sqrt{d^2 - (r_1 - r_2)^2}$ where $d$ is the distance between the centres

Correct Answer: Rudimentary

Solution : The first option is the correct answer.

In the context of the sentence, advanced refers to the significant development and progress of evolutionary psychology. The antonym rudimentary fits well, indicating a basic or early stage of development, contrasting with the idea of significant advancement.

The

Correct Answer: 550 cm²

Solution : Given: The volume of a right circular cone is 1232 cm³ and its vertical height is 24 cm.
Let $r$, $h$, and $l$ be the radius, height, and slant height of the cone.
According to the question,
$\frac{1}{3}×\pi×r^2×h=1232$
Or, $\frac{1}{3}×\frac{22}{7}×r^2×24=1232$
Or, $r^2=\frac{1232×7×3}{22×24}$

Correct Answer: 23

Solution : Given:

In each row, the third number is the difference between the first two. 
Row 1: 134 – 34 = 100
Row 2: 117 – 86 = 31
Row 3: 87 – (?) = 64
⇒

Correct Answer: $100(\frac{Q-P}{Px-Qy})$

Solution : Given: $P$ is the principal, $x$ is the rate for 1st case, $Q$ is the principal and $y$ is the rate for the second case.
Let the amount be equal in $T$ years.
Simple interest = $\frac{P×R×T}{100}$
According to the question:
$P+\frac{P×x×T}{100}=Q+\frac{Q×y×T}{100}$
⇒ $\frac{PxT}{100}-\frac{QyT}{100}=Q–P$
⇒