Talking about ages in task 1

X-Y = ages
1) The youngest age group
2) The oldest age group
3)Those aged from X to Y(those aged from 7 to 14)
4)People aged from X to Y
5)Those from the X-Y age group/bracket/category
6)People from the X-Y age group/bracket/category
7)The X-Y age range
8)People between the ages of X and Y
9)Individuals within the X-Y demographic
10)People in the X-Y age set
11)Individuals belonging to the X-Y age bracket

#task1

There is also this too