Your bother is 2 1/2 years old
hope this helps :)
1/26
In a standard pack of 52 playing cards there are 2 black 6 's
The 6 of spades and the 6 of clubs
Probability = number of favourable outcomes / number of possible outcomes
P( black 6 ) =2/52 = 1/26 in simplest form
It's probably 8 actually. Because you measure the AC and the CB and just subtract.
Four as zeros don't count when you're figuring out significant figures
1+200000-1+200000
200001-1+200000
200000+200000
400000
