CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

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Answer the next 10 questions based on the information given below:

Consider the digits 2, 3, 4, 7 & 8. Using these digits,

1. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 5-digit numbers can be formed, if repetition of digits is not allowed?

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7 8 9 4 5 6 1 2 3 0 . -

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2. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 5-digit numbers can be formed, if repetition of digits is allowed?

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7 8 9 4 5 6 1 2 3 0 . -

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3. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 4-digit numbers can be formed, if repetition of digits is not allowed?

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7 8 9 4 5 6 1 2 3 0 . -

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4. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 4-digit even numbers can be formed, if repetition of digits is not allowed?

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5. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 4-digit numbers can be formed which are multiples of 4, if repetition of digits is not allowed?

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6. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 4-digit numbers can be formed which are multiples of 3, if repetition of digits is not allowed?

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7. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 4-digit numbers can be formed such that 2 always comes before 8, if repetition of digits is not allowed?

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8. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 5-digit numbers can be formed having exactly 1 digit between 3 & 7, if repetition of digits is not allowed?

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9. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

How many 5-digit numbers can be formed such that 4 & 2 always come together, if repetition of digits is not allowed?

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10. CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

What is the sum of all the 5-digit numbers that can be formed, if repetition of digits is not allowed?

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CRE 4 - Forming numbers using digits | Modern Math - Permutation & Combination

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