Presuming base 10 (aka, all numbers are between 0-9), 1+(10^3/10) so 101.
Edit: Changed the exponential analysis to emphasis the fact that 10 9's occur in 100 10's. Some result though.
997 is the last 3 digit prime number
no
The first 3 digit natural number is 100: 100 ÷ 4 = 25 → first 3 digit natural number divisible by 4 is 4 × 25 The last 3 digit natural number is 999: 999 ÷ 4 = 249 r 3 → last 3 digit natural number divisible by 4 is 4 × 249 → number of 3 digit natural numbers divisible by 4 is 249 - 25 + 1 = 225.
You line up the last numbers and then add it!
To convert the even number 8643 into an odd number, you can simply change its last digit to an odd digit. For example, changing the last digit from 3 to 5 gives you 8645, which is an odd number. Any number with an odd last digit (1, 3, 5, 7, or 9) is considered odd.
1155
No because its last digit is 6 which is an even number. Odd numbers have 1, 3, 5, 7, 9 in its last digit or in the ones digit. Examples: 3, 11, 25,789
1
The mystery number is 413. The digit 4 has the digits 1 and 3 on its left and right, respectively. Additionally, the digit 3 is not the last digit, which confirms that 413 satisfies all the given conditions.
There are 54 such numbers.There are 54 such numbers.There are 54 such numbers.There are 54 such numbers.
The number 153 is an odd number. It's because the last number 3 is an odd number..... I hope you understand....
The first 3 digit number divisible by 19 is 114 (= 19 x 6) The last 3 digit number divisible by 19 is 988 (= 19 x 52) That means that there are 52 - 6 + 1 = 47 three digit numbers that are divisible by 19.