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What 5 digit number multiplied reverses 4?
Originally Answered: A five digit number when multiplied by 4 gives a product which is in reverse order of number. What is the number? 21978 is the required number. 21978 is the required number.
What is a four digit number multiplied by n the 4 digit no repeats itself to give an 8 digit no has all distinct digits then n is a multiple of?
When a 4 digit number pqrs is multiplied by N, the 4 digit number repeats itself to give an 8 digit no. If the 4 digit number has all distinct digits then N is a multiple of: 73.
How many five digit numbers can be formed that are the same when the order of their digits is reversed?
Therefore, there is only one possibility of allocating any digits to them. Hence, the total possibilities of choosing a five-digit number such that it will not change after reversing its order will be the product of all the possibilities of selecting all the digits. i.e. So, the correct answer is “ 900 ”.
How do you solve Abcde 4 Edcba?
Since EDCBA is a 5-digit number, we know ABCDE is < 1/4 × 100000.
- ABCDE < 25000, so A is 1 or 2. But EBCDA is a multiple of 4, so it is even, so A = 2.
- 4 * …. E = ….
- We have 2BCD8 * 4 = 8DCB2. and therefore 4 × BCD + 3 = DCB.
- But B cannot be greater than 2, or there would be a carry, and B cannot.
How many 4 digit numbers can be formed using 4 digits?
The thousands place in a 4-digit number cannot be 0. The smallest 4 digit number is 1000 and the greatest 4 digit number is 9999. There are 9000 four-digit numbers in all.
How many four digit numbers can be formed from the digits 1234?
Hence, in this case there are 4 3 = 12 possible two digit numbers. For the third digit there are only 2 choices and for the last digit, one choice. Thus if you are not allowed to repeat a digit the number of possible 4 digit numbers you can construct from 1,2,3,4 is 4 3 2 1 = 24.
How many four digit numbers are there?
9000 four digit numbers
FOUR – DIGIT NUMBERS are the numbers that have four digits, i.e. they have ones, tens, hundreds and thousands places. In fact, to find the number of numbers between any two given numbers, we use the same formula. Therefore, there are 9000 four digit numbers in all.
How is a 5 digit number which has only 2 digits?
10000 is the smallest five digit number, but this contains two different numbers 1 and 0.
When a four-digit number is multiplied by 4 its digits appear in?
When a certain four-digit number is multiplied by 4 its digits appear in reverse order. It also has the following properties. It’s first digit is a quarter of the last one. And its second digit is one less than the first. “When a four-digit number is multiplied by 4 its digits appear in reverse order.”.
What is the four digit number that is less than 2500?
The Four Digit Number is 2178. 2178 * 4 = 8712. 8712 is the reverse of 2178. Since it’s 4 Digit Number and since after multiplication also it has to be a 4 Digit Number, it’s easy to see that the Number has to be less than 2500 since 2500 * 4 = 10000.
Why can’t a number have a second digit of 0?
The Number can’t have second Digit as 0, so the second Digit has to be 1 or above. This is because if the last Digit is 8 and when 8 is multulied by 4 gives the carry of 3 and to make the next Digit (from right) as 0, some Digit when multiplied by 4 has to result into a number ending with 7, which is impossible.
How to reverse the digits of an integer in JavaScript?
Write a program to reverse the digits of an integer. Time Complexity: O (log (n)), where n is the input number. Time Complexity: O (log (n)) where n is the input number. We will convert the number to a string using StringBuffer after this, we will reverse that string using the reverse () method