please help with Q4a&b thank you!

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Secondary 1 | Maths
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Secondary 1 Maths Singapore

please help with Q4a&b thank you!

Date Posted: 1 year ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Hi, hope this helps

Date Posted: 1 year ago

Goh Lucas

1 year ago

Answer is 432 as it’s the only one that fits in 400-500 range