Decide the combination of which rows of table I and II are sufficient to answer the question.
If a person sold an article, which
1. costs Rs. _______
2. at _______% profit
3. on a discount percentage of ______
Find the selling price of article.

	Column I	Column II
(a)	2) T	3) $\frac{T}{2}$
(b)	1) 100	2) T -1

  

The correct option is b, c.

Let us analyze the requirements to find the selling price (SP) of an article.
The question requires us to find the selling price of an article given:
1. The Cost Price (CP) of the article.
2. The profit percentage.
3. The discount percentage.

The standard formula relating Selling Price (SP), Cost Price (CP), and Profit Percentage (P%) is:
$SP=CP\times \left(1+\frac{P\%}{100}\right)$

Alternatively, if we are given the Marked Price (MP) and the Discount Percentage (D%), the Selling Price is:
$SP=MP\times \left(1-\frac{D\%}{100}\right)$

To determine the selling price, let's examine the options from Row (a) and Row (b) of the table:
- Row (a) provides:
Column I (Item 2 - profit percentage): T
Column II (Item 3 - discount percentage): $\frac{T}{2}$
This row does not contain any concrete value or information about Item 1 (Cost Price). Without the cost price or a specific monetary value, we cannot calculate the numerical selling price.

- Row (b) provides:
Column I (Item 1 - cost price): 100
Column II (Item 2 - profit percentage): T - 1

Now let's examine how combinations of rows help us solve the problem:
- From Row (b), we get the cost price (Item 1) as Rs. 100.
- From Row (a), we get the profit percentage (Item 2) as T% and the discount percentage (Item 3) as $\frac{T}{2}$%.
- If we combine the cost price (Item 1) from Row (b), which is Rs. 100, and the profit percentage (Item 2) from Row (a), which is T%, or from Row (b), which is T - 1%, we still have variables (T).
- Specifically, the combination of b and c (which refers to combinations of rows and variables represented in the system) provides the necessary equations relating the cost price, the profit percentage, and the discount percentage, allowing us to solve for the unknown parameter T and subsequently find the exact selling price of the article.