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Each of the digits 1,1,2,3,3 and 4 is written on a separate card. The six cards are then laid out in a row to form a 6-digit number.

How many distinct 6-digit numbers are there?

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Important Questions on Combinatorics and Mathematical Induction

EASY
11th Tamil Nadu Board
IMPORTANT

Each of the digits 1,1,2,3,3 and 4 is written on a separate card. The six cards are then laid out in a row to form a 6-digit number.

How many of these 6-digit numbers are even?

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11th Tamil Nadu Board
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Each of the digits 1,1,2,3,3 and 4 is written on a separate card. The six cards are then laid out in a row to form a 6-digit number.

How many of these 6-digit numbers are divisible by 4?

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11th Tamil Nadu Board
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If the letters of the word GARDEN are permuted in all possible ways and the strings thus formed are arranged in the dictionary order, then find the rank of the word GARDEN?

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11th Tamil Nadu Board
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If the letters of the word GARDEN are permuted in all possible ways and the strings thus formed are arranged in the dictionary order, then find the rank of the word DANGER.

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11th Tamil Nadu Board
IMPORTANT
Find the number of strings that can be made using all letters of the word THING. If these words are written as in a dictionary, what will be the 85th string?
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11th Tamil Nadu Board
IMPORTANT
If the letters of the word FUNNY are permuted in all possible ways and the strings thus formed are arranged in the dictionary order. Find the rank of the word FUNNY.
MEDIUM
11th Tamil Nadu Board
IMPORTANT
Find the sum of all 4-digit numbers that can be formed using digits 1,2,3,4 and 5 repetitions not allowed?
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11th Tamil Nadu Board
IMPORTANT
Find the sum of all 4-digit numbers that can be formed using digits 0, 2, 5, 7, 8 without repetition?