PK 2019 Q1
1. What is the value of 20 × 19 + 20 + 19?
- A 389
- B 399
- C 409
- D 419
- E 429
Pink Kangaroo 2019, Question 1. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: D 419
Note that 20 × 19 + 20 + 19 = 20 × 20 + 19 = 400 + 19 = 419.
Solution © UK Mathematics Trust, from the PK 2019 solutions.