# Brionur's profile - activity

2011-10-11 23:39:53 +0100 received badge  Student (source)
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2011-10-11 14:50:02 +0100 answered a question Counting number of trues in a 1000 line answer

# 3) Approximately 120/1000(Depending on the randomization)

var('x')
x=0
for y in range (1000):
F=matrix([[randint(0,1) for i in range(1,11)] for j in range(1,11)])
if (F.echelon_form()==identity_matrix(10)):
x=x+1
show(x/1000)

2011-10-11 14:29:58 +0100 asked a question Counting number of trues in a 1000 line answer
for y in range (1000):
F=matrix([[randint(0,1) for i in range(1,11)] for j in range(1,11)])
F.echelon_form()==identity_matrix(10)


I need help with this formula! We are supposed to find the number of outputted Trues in this statement. Either a percent answer or just the number true out of 1000 would be awesome!

I'm not very well versed in this programming language and any help with a description would be great!!