15 Jan (01): Raindrops Keep Falling on My Head
Dropping... dropping... 5s, 6s, 3s, 4s...
When will the first time 4 raindrops come together?
How many times, in 2 hours, will the 4 raindrops come together?
Here's what S1-02 says...
Look! How many ways did we use to arrive at our answers?
Loh Kwai Yin
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