最新GRE数学预测模拟试题(三)第一题a number is a palindrome if it reads exactly the same from right to left as it does from left to right, for example 959 and 24742 are palindromesA: the probaility that a three dight number chosen at
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![最新GRE数学预测模拟试题(三)第一题a number is a palindrome if it reads exactly the same from right to left as it does from left to right, for example 959 and 24742 are palindromesA: the probaility that a three dight number chosen at](/uploads/image/z/3887043-51-3.jpg?t=%E6%9C%80%E6%96%B0GRE%E6%95%B0%E5%AD%A6%E9%A2%84%E6%B5%8B%E6%A8%A1%E6%8B%9F%E8%AF%95%E9%A2%98%EF%BC%88%E4%B8%89%EF%BC%89%E7%AC%AC%E4%B8%80%E9%A2%98a+number+is+a+palindrome+if+it+reads+exactly+the+same+from+right+to+left+as+it+does+from+left+to+right%2C+for+example+959+and+24742+are+palindromesA%3A+the+probaility+that+a+three+dight+number+chosen+at)
最新GRE数学预测模拟试题(三)第一题a number is a palindrome if it reads exactly the same from right to left as it does from left to right, for example 959 and 24742 are palindromesA: the probaility that a three dight number chosen at
最新GRE数学预测模拟试题(三)第一题
a number is a palindrome if it reads exactly the same from right to left as it does from left to right, for example 959 and 24742 are palindromes
A: the probaility that a three dight number chosen at random is a palindrome
B: 1\/10
答案怎么能是相等呢 三位数的话百位上应该是C9 1,是九个呀,0不能当百位呀,十位是 C 10 1,各位就是百位不用算 三位数有1000个,那么应该是 90/1000 是9/100呀 求解
最新GRE数学预测模拟试题(三)第一题a number is a palindrome if it reads exactly the same from right to left as it does from left to right, for example 959 and 24742 are palindromesA: the probaility that a three dight number chosen at
三位数是从100到999,也就是999-100+1=900个,所以是十分之一呀