A X B
Probability
Level
1
How many ways are there to select a number from set A and another number from set B such that these two numbers are distinct?
Note: Selecting 3 from A and 4 from B is different from selecting 4 from A and 3 from B.
26
30
28
24
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
There are 6 ways of choosing a number from A. There are 5 ways of choosing a number from B. Thus the total number of arranges is 6 × 5 = 3 0 .
The number of ways in which we can select the same number from both the sets is 4 , i.e, 3 − 3 , 4 − 4 , 5 − 5 , 6 − 6 .
Hence 3 0 − 4 = 2 6