Page 58 - NUMINO Challenge_D1
P. 58
Problem solving
1 To find one fake coin, the six gold coins are Key Points
divided into three groups of two coins each and
measured on the balance, as shown below. In You can find out
the case of balance , is the fake coin heavier how the weight of
or lighter than the real coin? the fake coin
compares with that
of the real coin if
you know which
group contains the
fake coin.
34 56
56
12 12
2 There is one heavy fake coin among 30 gold Divide the gold
coins. What is the least number of times you coins into three
must use the balance to find the fake coin? groups of 10 coins
each.
55Words and Logic
1 To find one fake coin, the six gold coins are Key Points
divided into three groups of two coins each and
measured on the balance, as shown below. In You can find out
the case of balance , is the fake coin heavier how the weight of
or lighter than the real coin? the fake coin
compares with that
of the real coin if
you know which
group contains the
fake coin.
34 56
56
12 12
2 There is one heavy fake coin among 30 gold Divide the gold
coins. What is the least number of times you coins into three
must use the balance to find the fake coin? groups of 10 coins
each.
55Words and Logic
