Question

How to know when to solve permutations and combinations?

Answer 1

Step-by-step explanation:

if an event occur in many different ways then the total gives us a hint to do permutations and combination

for ex :

ILLUSTRATION 1 :A college offers 6 courses in morning and 4 in evening. The possible no. of choices with the student if he wants to study one couse in morning and one in evening is -

ANS : the student has 6 choices(6 ways) from morning courses and for evening he has 4 choices ( 4 ways)

hence total number of way = 24 way( 24 choices)

IF QUESTION WAS either in morning or evening then 10 choices would be there

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