13112221

Not sure if it is correct. . +100, -100, +100, -100

Pattern seems to be +100, -150, +100, -150.

A: +100 -150 sequence hence last 2 numbers are 650 and 750 B: +100 -50 sequence starting from 650 C: +100 -50 sequence starting from 800 That makes 3 sets, however I'm not sure if B and C is considered 2 different sets as the patterns are the same except placing of numbers.

Looks at +100, - 150, +100, - 150

After you have gotten the numbers for the 2 cards which are 650 and 750, I think you can then rearrange the cards to firm 2 other patterns. I think that's what the problem is trying to suggest.

Ahh.... In that case the question could have been phrased a little differently.. Ie- (a) what are the two missing numbers in this pattern (b) form another pattern with all the 6 numbers.

Precisely Tan Weiqiang, sometimes when qn are clear, it leads to much confusion.

Is this correct?

2 answers accepted by my girl's teacher. Not sure if we can re-arrange the numbers to get the below 3rd pattern

Third one incorrect?

3rd pattern suggested by my son. But younger sister confused whether she is allowed to re-arrange the numbers.

One more pattern. Is it correct?

I noticed that if we put 700 and 800 in the middle of pattern then we can rearrange the numbers easier.

Thanks for the answers. Will let my girl with the teacher.

4/5 of the fruits were apples. That makes 4 units for apples. Half of the apples were red so that makes 1/2 of the 4 units = 2 units red apples. Compare the 2 units to the whole.. You'll get fraction of 2/5

Sorry can't write out now.

Ok thanks Tan Tan Weiqiang =)

On behalf of Geraldine Lim

Making it visual...

Thanks Mayuree Thongpan

Thanks Tan Weiqiang

Can i know this qn is for which level?

P4

yeap...you'll see this question in P5 and 6 as well. :)

Yes, typically a P4 question but the denominator never goes beyond 12. Also, this is a typical type of question that can be solved either by unitary or ratio and the uniqueness of this type of question: before-and-after involving only ONE ITEM that changes.

Making it visual...