If repetition of the digits is allowed, then find the number of even natural numbers having three digits.​

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1. Answer:

   450

   Step-by-step explanation:

   In a 3 digit number one’s place can be filled in 5 different ways with (0, 2, 4, 6, 8)

   10’s place can be filled in 10 different ways

   100’s place can be filled in 9 different ways

   There fore total number of ways = 5 x 10 x 9 = 450

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