Propability question help please! cheers! :-)

2 people are asked (indepently of one another) to choose 2 letters (each) from the letters of the word FRACTION.
Find the probability that: (i) They have no letters in common
(ii) They both choose the same pair of letters.

Ans 15/28
1/28

please explain :-)

Quote:

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Originally Posted by aimsywamesy

2 people are asked (indepently of one another) to choose 2 letters (each) from the letters of the word FRACTION.
Find the probability that: (i) They have no letters in common
(ii) They both choose the same pair of letters.
Ans 15/28 & 1/28

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There are to choose two letters.

Thus, there are for the first to pick and for the second to pick totally different letters.

thank you... :-)