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A four digit number (numbered from 0000 ...

A four digit number (numbered from 0000 to 9999) is said to be lucky if sum if its first two digits is equal to the sum of its last two digits. If a four digit number is picked up at random, find the probability that it is lucky number.

A

`9^4`

B

9000

C

4536

D

4464

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The correct Answer is:
D
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