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How many four digited numbers can be for...

How many four digited numbers can be formed using the digits 1,2,5,7,8,9 ?
How many of them begin with 9 and end with 2 ?

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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE -1.1 SHORT ANSWER QUESTIONS
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  8. In how many ways 10 persons A(1),A(2),A(3),A(4),………., A(10) can be sea...

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  9. The number of ways in which ten candidates A(1),A(2),A(3),A(4),……,A(10...

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  10. How many numbers that can be prepared using the digits 0,2,4,6,8 witho...

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  11. How many four digited numbers can be formed using the digits 1,2,5,7,8...

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  12. Find the number of 4-digit numbers that can be formed using the digits...

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  13. If the letters of the word 'RUBLE' are arranged in all possible ways a...

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  16. Find the sum of all 4- digited numbers that can be formed using the di...

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  17. Find the sum of all 4 digited numbers that can be formed using the dig...

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  18. Suppose that 'n' letters are written to 'n' different persons and thei...

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  19. If the letters of the word BRING are permuted in all possible ways and...

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