Nguyen Hoang Minh Nhut
Giới thiệu về bản thân
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2024-04-20 06:48:20
There are two numbers whose product is divisible by 4 when it has 01 number which is divisible by 4 or both of two are even number. So,
In the worst scenario, we have:
18 odd numbers that cannot create pair of numbers
Drawn 01 even number but it is not divisible by 4
In the end, we drawn 01 even number.Now, we ensure that there are two numbers whose product is divisible by 4
Ø In result, we at least drawn 20 numbers at random to ensure that there are two numbers whose product is divisible by 4