Mathematics MCQs

Total expenses are Rs. 100,000.
Salaries are Rs. 50,000, which is 50% of the total.

The largest two-digit multiple of 7 is 7 × 14.
This equals 98.

Slope-intercept form is y = mx + c.
With m = 2 and c = 3, the equation is y = 2x + 3.

A 76 average over 5 tests requires 380 total marks.
The first four total 300, so 80 more marks are needed.

The LCM uses prime powers 2³, 3, and 5.
Their product is 8 × 3 × 5 = 120.

A point with x = 0 gives the y-intercept 4.
Using y = mx + c with m = -1 gives y = -x + 4.

The decrease is 65 units.
Since 65/650 × 100 = 10%, the decrease is 10%.

The second number is product divided by the first number.
Thus, 216 ÷ 18 = 12.

The sum of the roots is 6.
Their average is 6/2 = 3.

The total population is 100,000.
The largest town has 45,000, so the fraction is 45/100 = 9/20.

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

At 3:00, the minute hand points at 12 and the hour hand at 3.
Three hour intervals correspond to 3 × 30° = 90°.