For example, a building without an elevator can prevent the child from accessing higher floors.A 2013 review stated that outcomes for adults with cerebral palsy without intellectual disability in the 2000s were that "60–80% completed high school, 14–25% completed college, up to 61% were living independently in the community, 25–55% were competitively employed, and 14–28% were involved in long term relationships with partners or had established families". Adults with cerebral palsy may not seek physical therapy due to transport issues, financial restrictions and practitioners not feeling like they know enough about cerebral palsy to take people with CP on as clients.A study in young adults (18–34) on transitioning to adulthood found that their concerns were physical health care and understanding their bodies, being able to navigate and use services and supports successfully, and dealing with prejudices. A feeling of being "thrust into adulthood" was common in the study. Aging
Children with CP may not successfully transition into using adult services because they are not referred to one upon turning 18, and may decrease their use of services. Quality of life outcomes tend to decline for adults with cerebral palsy. Because children with cerebral palsy are often told that it is a non-progressive disease, they may be unprepared for the greater effects of the aging process as they head into their 30s. Young adults with cerebral palsy experience problems with aging that non-disabled adults experience "much later in life". : 42  25% or more adults with cerebral palsy who can walk experience increasing difficulties walking with age.
The generating function that has all coefficients 1 is given by

  
    
      
        
          
            1
            
              1
              −
              x
            
          
        
        =
        1
        +
        x
        +
        
          x
          
            2
          
        
        +
        
          x
          
            3
          
        
        +
        …
      
    
    {\displaystyle {\frac {1}{1-x}}=1+x+x^{2}+x^{3}+\ldots }
  
This power series converges and has finite value if and only if 
  
    
      
        
          |
        
        x
        
          |
        
        <
        1
      
    
    {\displaystyle |x|<1}
  .