Correct Answer: 640 km/hr

Solution : Given: An aeroplane covers a certain distance at a speed of 400 km/hr in 8 hours.
Here, distance = (400 × 8) km, time = 5 hours
So, the required speed = $\frac{\text{distance}}{\text{time}}$
= $\frac{400×8}{5}$
= 640 km/hr
Hence, the correct answer is 640

Correct Answer: K. V. K. Sundaram

Solution : The correct option is K. V. K. Sundaram.

Kalyan Vaidyanathan Kuttur Sundaram (May 11, 1904, – September 23, 1992), also known as K. V. K. Sundaram, was an Indian civil servant who served India as the second Chief Election Commissioner (December 20,

Correct Answer: Troposphere

Solution : The correct answer is the Troposphere.

The word "troposphere," which translates to "region of mixing," comes from the layer's strong convective air currents. The tropopause, the upper border of the layer, is located between 5 and 8 miles above the equator and 11 and

Correct Answer: 52

Solution : Given: $6^2+ 4^2 - 20$ of $2 + 40$
$= 36+ 16 - 40 + 40$
$= 52$
Hence, the correct answer is 52.

Correct Answer: 9

Solution : Given:
(I) 591⇒sky is blue
(II) 256⇒sea is deep
(III) 609⇒sea looks blue 

By comparing all the three coded sentences, we find that –
In sentences I and II, 5 and is are common.
In sentences II and III, 6 and sea are common.
In

Correct Answer: XY

Solution : Let's check the options –
First option: QP; Q – 1 = P
Second option: DC; D – 1 = C
Third option: XY; X + 1 = Y
Fourth option: ML; M – 1 = L

The third option is different from the other

Correct Answer: Set an activity in motion

Solution : The fourth option is the correct answer.

"Get the ball rolling" is an idiomatic expression that means to initiate or start an activity or process. The phrase often implies taking the initial steps to begin something. In the context of the

Correct Answer: in

Solution : The second option is the correct answer since ''in'' fits perfectly in the sentence.

The complete sentence is, "Put your signature in red ink."

Correct Answer: 27.27%

Solution : Given the ratio SP : CP as 8 : 11.
Let's denote the selling price as $8x$ and the cost price as $11x$, where $x$ is a positive constant.
⇒ Loss Percentage = $\frac{(CP – SP)}{CP}×100$
= $\frac{(11x – 8x)}{11x}×100$
= $\frac{3x}{11x}×100$
​= 27.27%
Hence,

Correct Answer: Conclusions I, II, and III follow

Solution : The possible Venn diagram, according to the given statements is as follows –

Let's analyze the conclusions –
Conclusion (I): Some M’s are Q – From the Venn diagram, it is evident that the circles representing M and Q overlap