Numbers
What is 25% of 200?
50
2x+5=15
x=5
What is the sum of the interior angles of a hexagon?
720°
What is the mean of the following set?
5, 10, 15, 20
12.5
A shop sells pens at ₹15 each. How much for 8 pens?
₹120
Simplify 34.
81
3x+7=2x+12
x=5
How many sides does a regular dodecagon have?
12
What would be the chance of drawing a red card in a set of poker cards?
26/52=1/2
A car travels 120 km in 3 hours. What is its average speed?
40 km/h
Find the square root of 225
15
If f(x)=2x2-3x+4, find f(3)
13
What is the formula for the volume of a sphere?
4/3πr3
What is the mode of the following set?
2, 3, 3, 5, 7, 7, 7, 9
7
A tank fills at 12 liters/minute. How long to fill 180 liters?
15 minutes
If a number increases from 80 to 100, what is the percentage increase?
25%
A number is tripled and decreased by 7, giving 20. What is the missing number.
3x-7=20, x=9
What is the diagonal length for a square of side length 10?
10√2
What is the probability of rolling two even numbers in a row on a fair die?
1/2 × 1/2 = 1/4
A train leaves at 60 km/h. Another leaves 2 hours later at 90 km/h. How long until the faster train catches up?
6 hours
Simplify √26
8
5x-2=3x+10
x=6
Find the area of a triangle with base = 12 and height = 9.
54
A bag has 3 red, 2 blue, and 5 green balls. What is the probability of picking a blue ball?
2/10=1/5
A rectangle has a perimeter of 50. If its length is 15, what is its width?
10