Correct Answer: Rs. 2,850

Solution : Ankita sold her watch at a 5% loss.
Here, SP = Selling price and CP = Cost price
Let the SP of the watch be $x$.
Then, CP $= \frac{100}{(100 - \text{Loss}\%)} \times SP =\frac{100}{(100- 5)} \times x = \frac{100}{95}x$
If she sold for 300 more, then $SP = 300 + x$
Then, gain = 5%
$CP =\frac{100}{(100 + P)} \times SP = \frac{100}{(100  +5)} \times (x + 300)$ = $\frac{100}{105}(300 + x)$
According to the question,
$\frac{100}{105}(300 + x) = \frac{100}{95}x$
$⇒\frac{(300 + x)}{x} = \frac{105}{95}$
$⇒95 \times (300 + x) = 105x$
$⇒28500 + 95x = 105x$
$⇒10x = 28500$
$\therefore x = 2850$
Hence, the correct answer is Rs. 2,850.

Correct Answer: Gandhi advocated complete sepration of Politics from religion.

Solution : Correct Answer is Gandhi advocated complete sepration of Politics from religion.

He argued for a religion-based form of secularism, based on the principle of tolerance and plurality as a means of promoting the peaceful co-habitation of various religious communities in India. He did not call for a complete separation of religion from politics. Instead, he used a new form of mass agitation that emphasized truth, tolerance and non-violence, as well as peaceful protests.

Correct Answer: 2

Solution : Amount = INR 7500
1. Two successive discounts of 5% and 5%
Net discount % = $5 +5- \frac{5×5}{100}$ = $9.75$
2. Single discount of 10%
3. Two successive discounts of 8% and 2%
Net discount % = $8 +2- \frac{8×2}{100}$ = $9.84$
So, the maximum discount is from option 2, which is a single discount of 10%.
Hence, the correct answer is 2.

Correct Answer: 38 years

Solution : Let the present age of the son be x years.

Two years ago, Aadhya was three times as old as his son, the equation becomes

⇒ Aadhya's age two years ago = 3 (x – 2) = 3x – 6

⇒ Aadhya's present age = 3x – 4 

Two years hence, twice her age will be equal to five times that of her son

⇒ 2 (3x – 2) = 5 (x + 2)

⇒ 6x – 4 = 5x + 10

⇒ x = 14

Aadhya's present age = 3x – 4 = (3 x 14) – 4 = 38 years.

Hence, option first is correct.

Correct Answer: Am I known to her?

Solution : The correct choice is the fourth option.

Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active sentence becomes the subject in the passive voice.

The structure of the passive sentence in the case of the simple present interrogative sentence is: "Am + singular object + past participle form of the main verb + prepositional phrase?"

Therefore, the passive voice sentence would be: "Am I known to her?"

Correct Answer: 51

Solution : Given:
98 – 39 – 27 = 31; 87 – 38 – 34 = 20

Multiply the digits of each number of the L.H.S. and then subtract them to get the R.H.S.
Like, 98 – 39 – 27 = 31→(9 × 8) – (3 × 9) – (2 × 7) = 72 – 27 – 14 = 31
And, 87 – 38 – 34 = 20→(8 × 7) – (3 × 8) – (3 × 4) = 56 – 24 – 12 = 20
Similarly, follow the same pattern for 79 – 25 – 12→(7 × 9) – (2 × 5) – (1 × 2) = 63 – 10 – 2 = 51

Hence, the first option is correct.

Correct Answer: 30

Solution : Given: The number of pupils in a class = 55
Ratio of male and female = 5 : 6
Let the number of male and female pupils be 5x and 6x, respectively.
So, the total number of pupils = 5x + 6x = 11x
According to the question,
11x = 55
$\therefore$ x = 5
Number of female pupils = 6x = 6 × 5 = 30
Hence, the correct answer is 30.

Correct Answer: 172

Solution : Given:
214, 207, 193, ?, 144, 109

In the above-given series, subtract the multiples of 7 from the previous number to get the next number.
214 – 7 = 207; 207 – 14 = 193; 193 – 21 = 172; 172 – 28 = 144; 144 – 35 = 109

So, 172 is the missing number of the series. Hence, the first option is correct.

Correct Answer: 1833

Solution : The correct answer is 1833.

Carl Friedrich Gauss and Wilhelm Eduard Weber invented the first electromagnetic telegraph in 1833. Weber was appointed physics professor in Gottingen in 1831, having completed his studies in Halle and Gottingen. His attempts to create an absolute electrical unit system resulted in an advancement in electrical research.

Correct Answer: Arybhatta 

Solution : Correct Answer is Aryabhatta 

The concept of zero was transmitted from India and Babylon to Greece, Persia, and the Arab world over the course of hundreds of years. Zero was first used in calculations by Aryabhatta in the fifth century and Brahmagupta sometime around 628 BC. The concept of zero was thus invented by Aryabhatta.