How many four-digit numbers are such that the sum of the digits is 9?

So there are 165 four-digit numbers with a digit-sum of 9.

What number times 4 equals itself backwards?

To summarize, the only number that solves the puzzle is 2178. By a similar logic, we can find the six-digit number that when multiplied by 4 is equal to the original number with its digits in reverse order.

How many 4 digit numbers are there in total?

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.

When a 4 digit number is multiplied by 9 its digits get reversed find the 4 digit number?

9*1089 = 9801.

How many 4 digits are there?

9000 four
There are 4 numbers (any number from 0-9) in a 4-digit number and the starting number should be 1 or bigger than 1. 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 numbers are there in a 4-digit number?

There are 4 numbers (any number from 0-9) in a 4-digit number. There are 9000 four digit numbers in all.

How to find the product of the digits of a number?

Given a number, the task is to find the product of the digits of a number. Recommended: Please try your approach on {IDE} first, before moving on to the solution. Get the rightmost digit of the number with help of remainder ‘\%’ operator by dividing it with 10 and multiply it with product.

How to find the place value of a four digit number?

Watch how a 4-digit number is formed by adding 1 to the greatest 3 digit number. When we covered 3 3 -digit numbers, we saw that the hundreds place value was the units place multiplied by a hundred. Like you’ve already read, for four digit numbers, a new place value is introduced which is the units place multiplied by 1000 1000

How to decompose 4-digit numbers?

To decompose 4-digit numbers we multiply each digit of the 4-digit number with its value, that is, 1000, 100, 10, and 1 respectively. For example, the given 4-digit number 5627 can be decomposed as follows: Observe the following figure which shows how to write a 4-digit number according to its place values.