The sum of an infinite geometric series with first term 1 and ratio 1/2 is?

What is the expansion of (a-b)²?

A man walks 4 km North then 3 km East. How far is he from the start?

Using the BODMAS rule, solve: [(15 − 5) ÷ 2] + 3² = ?

What is the area of a triangle with base 10 cm and height 6 cm?

A price dropped from 250 to 200. What is the percentage decrease?

Using the BODMAS rule, solve: (2 + 3)² ÷ 5 + (4 × 2) = ?

Using the BODMAS rule, solve: (7 − 2) × (6 ÷ 2) = ?

What percentage is 18 out of 90?

What is the nth term of arithmetic sequence 3 7 11 15?

Using the BODMAS rule, solve: 12 − 4 × 2 = ?