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Primary 3 | Maths
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JO
JO

Primary 3 chevron_right Maths chevron_right Singapore

Please advise.

Date Posted: 4 years ago
Views: 271
Val val
Val Val
4 years ago
The hints is it will+123...

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AC Lim
Ac Lim's answer
12074 answers (A Helpful Person)
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Hope this help
JO
JO
4 years ago
Thanks.
Is there any way to find the pattern?
AC Lim
AC Lim
4 years ago
Yes
Can use formula: F x (F+1) / 2
Example Figure 7 = 7x(7+1)/2 =28
AC Lim
AC Lim
4 years ago
If they give total triangle =91
Therefore
Fx(F+1)/2 =91
Fx(F+1) = 182
13 x 14 = 182
Answer figure 13 have 91 triangle.
JO
JO
4 years ago
Thanks alot.

Wow. That’s quite tough for P3.