What does “Fundamental principle of counting” actually mean in Permutations & Combinations, and why does it matter for JEE?
if one task has m ways and another n ways, together they have m×n ways.
In simple words: if one task has m ways and another n ways, together they have m×n ways. Getting Fundamental principle of counting clear matters because JEE questions on Permutations & Combinations usually test this idea directly, not just a formula you memorised.
Key point
Fundamental principle of counting
Common mistake
adding when you should multiply independent choices.
Memory tip
'and' usually means multiply; 'or' usually means add.
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