This is Singapore PSLE (Primary School Leaving Exams) Maths for 12- year-old kids.
It is not difficult for adults, but I wonder most kids have such analytical skill ?
Answers below (scroll far behind….)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.cccc
..
.
.
.
.
.
.
.
.
.
.
.
.
.cccc
..
.
.
.
.
.
.
.
.
.
.
.
.
.cccc
..
.
.
.
.
.
.
.
.
.
.
.
.
.cccc
..
.
.
.
.
.
.
.
.
.
.
.
.
.cccc
..
.
.
.
.
.
.
.
.
.
.
.
.
(1)
(2):
R – B = 1 for every suite of 5 cards
If R-B = 36
36×5= 180 cards
Mathtuition88 