HKIMOOfficial Paper

Official Paper HKIMO 2020 - Senior Secondary - National Round

The official 2020 paper. Practise with a timer, automatic marking and a question by question review.

Time limit

90 minutes

Questions

25 questions

Maximum score

100 points

Question type

Fill-in

How this paper is marked

1Each correct answer earns the full points for that question. Wrong or blank answers lose nothing.

Preview a few questions

Question 1 of 254 points

There are

n

lines cutting a circle which separate the circle into 361 parts, find the minimum value of

n

Question 2 of 254 points

Now putting

n

blue,

n

yellow,

n

red,

n

green,

n

purple balls into a bag and drawing balls from it. If the rest are all red after drawing the 87th ball, find the difference between the maximum value and the minimum value of

n

23 more questions are waiting for you.

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