Total 5×5×4×3×2×1=600; 0 in tens: 5×4×3×2×1=120.
Answer: 600; 120
11TH•Mathematics•Permutations And Combinations•Question 11
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How many 6-digit numbers can be formed, without repeating any digit from the digits 0, 1, 2, 3, 4, 5? In how many of them will 0 be at the tens place?
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