Correct Answer: 3 and 9

Solution : Given:
8 × 4 – 3 + 57 ÷ 9 = 42

Replace the given numbers according to the options one by one with the original numbers in the given equation.
First option: 8 and 4
⇒ 4 × 8 – 3 +

Correct Answer: 5 cm

Solution : The volume of a hemisphere $ = \frac{2}{3}\pi r^3$ 
The volume of a cylinder $ = \pi r^2 h$
Where $r$ is the base radius and $h$ is the height.
Given that the radius of the hemisphere is 30 cm and the height of

Correct Answer: $3\sqrt2$

Solution :
According to the question, we draw a figure of a rectangle ABCD.
Given that: QA = 3 cm, QB = 4 cm and QC = 5 cm
QD² + QB² = QA² + QC²
⇒ QD² + 16 = 9

Correct Answer: 81.2%

Solution : Given: Maximum marks = 450
Total marks obtained by Anoop = 74 + 84 + 124 + 36.4 + 47 = 365.4
Overall percentage = $\frac{\text{Marks obtained}}{\text{Maximum marks}}\times100$
= $\frac{365.4}{450}\times100$
= 81.2%
Hence, the correct answer is 81.2%.

Correct Answer: 1565

Solution : The correct answer is 1565.

In the Battle of Talikota, four allied Muslim sultans from Bijapur, Bidar, Ahmadnagar and Golconda faced off against the armies of the monarch of Vijayanagar in the Deccan area of southern India. The battle took place in January of

Correct Answer: Mahanadi

Solution : The correct answer is Mahanadi.

The Mahanadi River is the third-largest river in the Indian peninsula and the largest river in the state of Odisha. It originates from the Sihawa Mountain of Chhattisgarh state and flows through Odisha before emptying into the Bay of

Correct Answer: Razia Sultan

Solution : The correct answer is Razia Sultan.

Razia Sultan was the daughter of Iltutmish, a ruler of the slave dynasty. Iltutmish raised Razia to Sultan because of her capabilities. Razia became the first women ruler during the Delhi Sultanate from 1236 to 1240. She was

Correct Answer: as strong possible.

Solution : The first option is correct.

The error lies in the phrase as strong possible. It should be corrected to as strong as possible to properly convey the intended meaning. The comparative as strong as possible indicates the desired level of strength for the

Correct Answer: 3

Solution : The correct option is 3.

3 geostationary satellites are required for continuous global coverage. In a geostationary orbit around the Earth, which means they orbit at the same speed as the Earth's rotation, these satellites are placed in a strategic location. The majority of the

Correct Answer: 6

Solution : Let's check the given statements –
1. H scored only more than N. The marks of three students were between the marks of J and I.

2. I did not score the highest marks.