Correct Answer: Rs. 6615

Solution : Let the instalment value be Rs. $P$.
According to the concept,
$\frac{x}{(1+\frac{R}{100})} +\frac{x}{(1+\frac{R}{100})^2} +...........+\frac{x}{(1+\frac{R}{100})^n} =A$
where $x$ is the instalment value, 'A' is the total amount that was created in instalments and n is the number of instalments.
$P(1+\frac{5}{100})+P=12300(1+\frac{5}{100})^{2}$
⇒ $1.05P+P=12300×\frac{21}{20}×\frac{21}{20}$
⇒ $2.05P=13560.75$
⇒

Correct Answer: $37.5$%

Solution : A grocer sells rice at 10% profit.
Let the cost price of the rice be 100.
Selling price = 100 + 10 = 110
He uses weights that are 20% less than the market weight.
Original cost of that rice = 100 – 20 =

Correct Answer: Godavari

Solution : The correct answer is Godavari

The Dakshin Ganga is another name for the River Godavari. The Godavari River spans 1500 kilometres. Godavari River rises in the Nasik district of Maharashtra, on the Western Ghats' foothills. With flowing into the Bay of Bengal, the Godavari River

Correct Answer: work

Solution : The first option is the correct choice.

Explanation: The correct sentence uses the present participle form "working" after the auxiliary verb "have." When forming the present perfect continuous tense, we use "have/has been" followed by the present participle (verb + ing). In this

Correct Answer: 3

Solution : Given: $\tan 45^{\circ}+\sec 60^{\circ}=x$
⇒ $1+2=x$
$\therefore x=3$
Hence, the correct answer is 3.

Correct Answer: Rs. 2000

Solution : Total amount = Rs. 2420
Rate, $R$ = 10%
Time, $n$ = 2
Let $P$ be the sum.
Total amount = $P(1+\frac{R}{100})^{n}$ where $P$ is principal, $R$ is the rate of interest per annum compounded annually and $n$ is time in years.
⇒ 2420

Correct Answer: Magnesium

Solution : The correct option is Magnesium.

The wire in flash bulbs is made of magnesium (Mg). When an electric current passes through the magnesium wire, it rapidly oxidizes, producing an intense burst of light. This combustion reaction is highly exothermic and provides the brief and intense

Correct Answer: pulled through

Solution : The correct choice is the second option.

The phrase pulled through is used to express successfully overcoming a difficult situation, which fits the context of exams. It conveys the idea that, despite being a weak student, the person managed to succeed or pass the

Correct Answer: 50

Solution : Let the capacity of the tank as $V$. 
The rates at which pipes A, B, and C fill the tank are $\frac{V}{10}$, $\frac{V}{15}$, and $\frac{V}{30}$ units per hour, respectively.
The rate at which pipe D empties the tank is $\frac{V}{x}$ units per hour.
In the

Correct Answer: 3

Solution : From the histogram provided,
The students who obtained 30 or more marks but than less 40 are the students who are in the class interval 30 – 40 = 3
Hence, the correct answer is 3.