Pakistan MCQs

For two positive integers a and b, gcd(a,b) × lcm(a,b) = ab.
This identity links common factors and common multiples.

Rent and food use 55%, leaving 45%.
Forty-five percent of Rs. 60,000 is Rs. 27,000.

If n ≡ 4 mod 7, then 2n ≡ 8 mod 7.
The remainder of 8 divided by 7 is 1.

Compare Tuesday sales with Monday: 210/150 × 100.
This equals 140%.

Add 5 to both sides to get 3x > 15.
Dividing by 3 gives x > 5.

There are 12 ratio parts, so one part is 30.
Rural respondents are 5 × 30 = 150.

Profit is Rs. 0.6 million.
As a percentage of revenue, 0.6/2.4 × 100 = 25%.

The extreme value 48 pulls the mean upward.
The median is resistant to the outlier and better represents the center.

The weighted total is 1×2 + 2×3 + 3×5 = 23.
There are 10 observations, so the mean is 2.3.

Pie-chart size is proportional to sector angle.
The largest angle, 108°, represents the largest part.

The six-month total is 6 × 80 = 480 mm.
The missing month is 480 - 370 = 110 mm.

The total is 400 people.
Males represent 240/400 × 100 = 60%.