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

Explanation

Given:

Increment in number = 20% of the number

Decrement in number = 20% of the new number

Concept used:

Net increase or decrease percent = {(Original number or Final number) - (Final number or original number) ÷ Original number} × 100

Calculation:

Let the original number be 100

When the number is increased by 20%

New Number = 100 + 20% of 100

⇒ 100 + 20

⇒ 120

Now, the number is decreased by 20%

Final number = New number – 20% of new number

⇒ 120 – 20% of 120

⇒ 120 – 24

⇒ 96

∴ Net Decrease in percentage = { (100 – 96) / 100} × 100

⇒ {4/100} × 100

⇒ 4%

∴ The net decrease percentage is 4%.

Last verified on 11-07-2026