Correct Answer: Koustav Chatterjee

Solution : The correct answer is Koustav Chatterjee.

Koustav Chatterjee is a 19-year-old chess player from Kolkata who became the 78th Grandmaster of India. He is the 10th Grandmaster from Bengal. The first grandmaster of India was Vishwanathan Anand; he became the Grandmaster in 1988

Correct Answer: $18°$

Solution : Given: $\tan2\theta\tan3\theta=1$
⇒ $\tan3\theta=\frac{1}{\tan2\theta}$
⇒ $\tan3\theta=\cot2\theta$
⇒ $\tan3\theta=\tan(90°–2\theta)$
⇒ $3\theta=(90°-2\theta)$
⇒ $5\theta=90°$
$\therefore\theta=18°$
Hence, the correct answer is $18°$.

Correct Answer: Mughal

Solution : The correct answer is Mughal.

Throughout the 16th and 18th centuries, the Mughal Empire ruled over much of the Indian subcontinent. Babur founded it in 1526. One of India's most significant emperors, Aurangzeb was the sixth Mughal emperor.

Correct Answer: Bihar

Solution : The correct option is Bihar.

According to the 2011 Census of India, the state with the lowest literacy rate in India was Bihar. Its literacy rate was only 47%.

The Census of India is a decennial (conducted every ten years) exercise that aims to collect

Correct Answer: 34,481

Solution : Given:
Radha deposited INR 1,60,000 at a 10% Compound Interest rate annually for two years.
The rate compounded semi-annually, so the rate will be $\frac{10}{2}=5$%
Time will be 2 × 2 = 4
$\text{Total Amount}=\text{Principal}×(1+\frac{\text{Rate}}{100})^{\text{Time}}$
⇒ Compound interest = $160000(1+\frac{5}{100})^4-160000$
= $160000[(\frac{21}{20})^4-1]$
= $160000[(\frac{194481-160000}{160000})]$
=

Correct Answer:

Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection.
So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the

Correct Answer: 16-degree celsius

Solution : The correct answer is 16 degrees Celsius.

The mean temperature is calculated by adding different values of temperature on Earth and dividing it by the number of entries. Mean temperature is a fundamental metric representing the the average air temperature over various periods.

Correct Answer: 60°

Solution :
Given: PA and PB are two tangents to the circle with centre O.
Let $r$ be the radius of the circle.
$\therefore$ OA $\perp$ PA
⇒ $\angle$OAP = 90°
In $\triangle$OPA,
$\sin\angle$OPA = $\frac{OA}{OP}=\frac{r}{2r}$ [Given OP is the diameter of the circle]
⇒ $\sin\angle$OPA =

Correct Answer: Niece

Solution : According to the given information, the family tree is as follows –

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

Now, from the above diagram, Raju's grandfather's son's daughter is Raju's sister. So, that girl is the

Correct Answer: Operating systems

Solution : The correct answer is Operating systems.

Operating systems are not considered application software. Operating systems, such as Windows, macOS, and Linux, are system software that manages computer hardware and provides services for other software applications to run. The other options—graphics software, spreadsheet software, and