Abookcase contains 2 statistics books and 5 biology books if 2 books are chosen at random the chance that both are statistics books is

Answer 1 (without replacement) :  

P(2 books)=P(first)*P(second)=2/7*1/6=2/42=1/21 this is if you don't put the book back on the shelf after taking it off the first time

Answer 2 (with replacement) :  

P(2 books)=P(first)*P(second)=2/7*2/7=4/49 this is if you put the book back on the shelf after taking it off the first time

I put he probably didn't put the book back on the shelf after this first time but I don't know without those details in the question

y = x + 95

y = 42 + 95

y=137 mm hg

17   x 256=4352

sorry if this is wrong, i'm new.

step-by-step explanation: