IMC 2010 Q1
1. What is the value of 10 + 10 × 10 × (10 + 10) ?
- A 21 000
- B 20 100
- C 2100
- D 2010
- E 210
Intermediate Mathematical Challenge 2010, Question 1. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: D 2010
10 + 10 × 10 × (10 + 10) = 10 + 10 × 10 × 20 = 10 + 2000 = 2010.
Solution © UK Mathematics Trust, from the IMC 2010 solutions.