a polindrome number is a positive integer that is the same when read forwards or backwards. the numbers 303 and 6996 are examples of palindromes numbers to the numbers of 5-digit palindrome number is
A palindrome number is a positive integer that is the same when read forwards or backwards. The numbers 303 and 6996 are examples of palindromes. The ratio of the number of 4 - digit palindrome numbers to the number of 5 - digit palindrome numbers is …
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Show that if A (A is a positive integer) and A have sum of digit is divisible 9, then A divisible 9.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
People believe that 13 is an unlucky digit
A. People are believed that 13 is an unlucky digit.
B. 13 has been believed to be an unlucky digit
C. It's believed that 13 is an unlucky digit.
D. It's believed 13 to be an unlucky digit
Đáp án C
Câu bị động đặc biệt: People + say/believe/notice/… + that SVO.
à It's said/believed/noticed/… that SVO; hoặc: S is said/believed/noticed/… to V
Given 4 digits: 4, 6, 2, 0.
What is the difference of the largest and the smallest 4-digit numbers that can be formed from these digits. Use each digit only ones.
Answer: The difference is
There is a 5 - digit number 10**0 , when this number divided by 23 or 29, both will get a remainder of 5. What is the value of this integer?
choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
1,3. Find the smallest odd three-digit multiple of 11 whose hundreds digit is greater than its units digit.
2,4. Find the sum of all the integers between 150 and 650 such that when each is divided by 10, the remainder is 4.
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