Which of the following is true?

Fertilization usually takes place in the uterus.

Women can get pregnant only on the day of ovulation.

Males produce an average of 300 million sperm a day.

Sperm survive for only one day after intercourse

2 answers

#1 is not true.
#4 is not true.
Check these sites and see what you find.

http://www.homehealth-uk.com/medical/fertilization.htm

http://www.ovulation-calendar.com/hlp-d02-ovulation-and-pregnancy.html

http://wiki.answers.com/Q/What_is_the_average_sperm_count_for_a_man

http://www.babyhopes.com/articles/sperm-survive.html.html