Selection round

Algebra

100

Solve: x+5=12

x=7

200

Solve: 3x−4=2x+7

x=11

300

Solve: 2(x−3)+5=x+4(x+1)

x= -5/2

Statistics

100

Find the mean of: 2,4,6

4

200

A triangle has base 8 cm and height 7 cm. Find the area.

28cm²

300

A trapezoid has bases 6 cm and 10 cm, and height 5 cm. Find the area.

40cm²

Geometry

100

Find the area of a square with side 5 cm.

25cm²

200

Find the median of: 10,7,3,8,6

Median = 7

300

Find the median of: 12,15,14,9,18,10,11

Median = 12

Trigonometry

100

What is cos⁡(0^∘)? 

1

200

Find sin⁡30^∘

1/2

300

What is the value of 2cos⁡(30^∘)?

√3