identify the number which is irrational.
a) -1.23
b)
8
c)
2
3
d) 0

B) 8  is irrational, since 8 is not a perfect square and the decimal form would be nonterminating and nonrepeating.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%