Think this was asked before.

Thank you for accepting me to join the group. Glad to be able to learn from you....

Cheers, just put your problems online, sooooo many members of the group will come to your rescue!

Sure.... Primary academics is getting so so tough 😁😁😁

Thanks for setting this group up.

Not at all, as u can see some members just solve problems in less than 5 to 10 minutes. I solved more secondary maths

Use model drawing first before introducing units and parts

This one, Bryan.

Oh.....sorry for the mistake. Answer is 10 deg but i dont know why. Here are the first few steps: angle aeb = 180-(20×2)=140. Maybe CE:EA = 1:3??

Please don't apologise. You did nothing wrong 😀 this question has bugged me for days lol

I only have d answer: 10deg. I did this question during CIMC. This also bugged me

Seems like an exceedingly simple question but it has proven otherwise. Many sleepless nights over this one hahaha, but it is fun.

You are having your one-week holiday now?

2 days..

Just two days?

Cos of d haze

Good lad you. Most other kids would be dying to watch TV or glue themselves to the computer, but you started crunching numbers so early in the day. Good for you! 👍

I did the sec. problems last night. Also CIMC. Here's the 1.

All the Singaporean sec. contestants were from NUSHS.

I see. So you were introduced to them over lunch or tea or refreshments?

Nah I didnt. But I did met them once and talked about SMO in the hall

Do pardon my ignorance, but what is SMO?

This 1

I see. Thank you for the enlightenment.

Nothin at all

Now can we get back 2 crunching numbers?

Absolutely mate

9 perfect squares : 1,1,1,1,4,9,9,25 and 49.

Yes! Or: 1,1,1,4,4,9,16,36,49.

Excellent job.

Care to share your approach, Bryan?