Which of these letters is included in the Polish alphabet?
Q
V
X
Y
The Polish native words don't include letters Q, V and X. From above only letter Y (read: short i as in bit) belongs to the Polish alphabet. 
reach: rather globalalphabetslanguagesPoland
Answers by country
Q
V
X
Y
answers
 Republic of Ireland
Republic of Ireland34
 Poland
Poland2544
 Germany
Germany73
 the Netherlands
the Netherlands13
 Spain
Spain12
 Greece
Greece27
 the United Kingdom
the United Kingdom119
 France
France10
 Canada
Canada20
 the United States
the United States107
 Australia
Australia19
 India
India33