The author introduces the birthday problem in this article. This can amuse willing members of any birthday party. This problem can also be used as the motivational first day lecture in number theory for the gifted students in high schools or in community colleges or in undergraduate classes in colleges.

This report presents preliminary data for 1999 on births in the United States. U.S. data on births are shown by age, race, and Hispanic origin of the mother. Data on marital status, prenatal care, cesarean delivery, and low birthweight rate are also presented. Data are based on a more than 97% sample of births for 1999. The crude birth rate in…

To mark the 25th anniversary of the Convention on the Rights of the Child, this edition of "The State of the World's Children" calls for brave and fresh thinking to address age-old problems that still affect the world's most disadvantaged children. The report is inspired by the work of innovators around the world--who are pushing…

This report presents data on U.S. births using information from the birth certificates of the 3.96 million births in 1999. Data are presented for maternal demographics (age, live-birth order, race, Hispanic origin, marital status, and educational attainment); maternal characteristics (medical risk factors, weight gain, tobacco use, and alcohol…

This Factbook provides state- and county-level statistical information on teen births in Ohio and discusses statewide trends from 1992 to 1996. The statistical portrait is based on 12 indicators: (1) number of infants born to teens; (2) teen birth rate; (3) repeat teen birth rate; (4) percentage of teen births to unmarried teens; (5) percentage of…

This KIDS COUNT report presents information on the status of Florida's children. This edition presents data in a format different from previous Florida Kids Count publications. In addition to the familiar format of individual county data on key indicators, users are provided with an overview of the state that allows for comparison among the 67…

This report is one in a series by the Food Research and Action Center celebrating the achievements of the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) in its 25-year history. The report documents the growth in WIC participation nationally and in each state during the program's history. Following a brief discussion…

This report presents national birth rates for teenagers for 1991-1998 and the percent change from 1991 to 1998. State-specific teenage birth rates by age, race, and Hispanic origin for 1991 and 1998, and the percent change, 1991 to 1998, are also presented. Tabular and graphical descriptions of the trends in teenage birth rates for the United…

This Kids Count report investigates statewide trends in the well-being of Delaware's children. The statistical report is based on 10 indicators of child well being: (1) births to teens; (2) low birth weight babies; (3) infant mortality; (4) child deaths, children 1-14 years; (5) teen violent deaths; (6) juvenile violent crime arrests; (7) high…

This Kids Count report provides information on state and countywide trends in the well-being of New Jersey's children between 1990 and 1998. The statistical portrait is based on 19 social indicators: (1) children receiving AFDC/TANF; (2) children receiving food stamps; (3) children receiving Medicaid; (4) Women, Infants and Children (WIC) program…

This Kids Count report presents information on the status of Florida's children. A statistical profile is presented for the state and for each county, based on demographic data and 19 indicators of child well being: (1) per capita income; (2) county population; (3) number of white and nonwhite children under 18 years; (4) number of births in 1993…

This report is published for the purpose of improving the well-being of Missouri's children by heightening awareness of children's issues within local communities and by promoting more effective responses to children's needs throughout the state. The report documents the status of children in all 115 Missouri counties. Following an Executive…

This Kids Count report provides information on state and countywide trends in the well-being of New Jersey's children between the early and middle 1990s. The statistical report is based on 13 indicators of child well being: (1) children receiving Aid to Families with Dependent Children; (2) children receiving food stamps; (3) low birth weight; (4)…

This tenth annual KIDS COUNT data book examines statewide and county trends in the well-being of West Virginia's children; this year's report looks at a decade of data based on indicators in four areas: child health, education, safety and security, and economic conditions. Following a summary that describes overall findings, the bulk of the report…

This Kids Count Data book details trends in the well-being of Connecticut's children. The statistical portrait is based on 23 indicators in the areas of demographics, security, health, education, and safety. This year's new format presents the data at the county and town levels, covering 169 municipalities and 8 counties. The data book begins with…