Explanation

Let the price of one marker = M

Let the price of one pen = P

3M + P = 340  ...(1)

4M + 2P = 560  ...(2)

Divide equation (2) by 2:

2M + P = 280  ...(3)

Subtract equation (3) from equation (1):

(3M + P) − (2M + P) = 340 − 280

M = 60

Substitute M = 60 into equation (1):

3(60) + P = 340

180 + P = 340

P = 340 − 180

Rs. 160

Last updated on 30 Oct 2026

Explanation

To calculate the average (or mean) of a data set, you use the formula:

Average=Sum of all values/Number of values​

Given:

• The sum of all 10 values in the data set is 10.
• The number of values is 10.

Using the formula:

Average=10/10​=1

$$Last\; updated\; on\; 30\; Oct\; 2026$$

Explanation

Given:

• X sold the property to Y for Rs. 96,000.

• Y sold it to Z at a 20% loss.

Formula:

Selling Price = Cost Price ×100-Loss /100

Explanation

Order given is:

1. Omar = Yasir > Pervaiz > Ghazi

2. Bilal > Pervaiz

So ahead of Pervaiz there are at least 2 people - Omar/Yasir and Bilal.

So Pervaiz can never be 2nd, he is 3rd at best.

If Omar/Yasir are 1st, Bilal is 2nd

If Bilal is 1st, Omar/Yasir are 2nd

In both cases the true 2nd place is Bilal.

Last verified on 20-10-2026

Explanation

The statement means: If Unit X clears a record, that record has a digital signature.

The particular record has no digital signature. Therefore, it could not have been cleared by Unit X. This follows from the contrapositive of the original statement.

Last verified on 20-10-2026