0
How many positive three digit integers can be formed such that the hundreds digit is equal to the sum of the tens digit and ones digit?
start with the 100's place
0 = 0+0
1 = 1+0 = 0+1
2 = 1+1=2+0=0+2
3 = 3+0 = 2+1 = 1+2 = 0+3
...
with the 100's digit, the number of such numbers is one greater than that number
0 : 1
1 : 2
...
therefore there are 1+2+3+4+5+6+7+8+9+10 = 5*11 = 55 such numbers
unless you don't count 000 as a three digit number, then there are 54 such numbers.
What else can I help you with?
How many four digit positive integers are there with thousands digit 2?
There are one thousand. Starting at 2000 and going to 2999
How many odd 2-digit positive integers less than 50 are there?
-48
How many 2-digit positive integers are there such that product of their two digit is 24?
-22
How many different positive integers can be formed if the first digit must be 2 the last digit cannot be 0 and digits may be repeated?
1 x 10 x 10 x 10 x 9 = 9000 1 = it must be 2 10's = any digits 9 = any digit BUT zero
What is the sum of all positive 1-digit integers that 4221462 is divisible by?
Select all the numbers that $4221462$ is divisible by.
How many positive 3-digit integers can be formed that the 100s digit is equal to the sum of the 10s and 1s digit?
54
How many four digit positive integers are there with thousands digit 2?
There are one thousand. Starting at 2000 and going to 2999
How may two digit-numbers contain the digit 4?
18 positive integers and 36 integers (negative and positive)
How many different positive four digit integers can be formed if the first digit must be even the last digit must be odd and all digits must be distinct?
There are 320 such numbers.
How many two-digit positive integers are there?
90
What is the number of 2 digit positive integers?
44
You are a 4 digit number your hundreds digit number is triple your thousands digit the number formed by your tens and ones digit is triple the number formed by your thousands and hundreds digits?
1339
How many one digit integers are there?
There are 10 one digit positive integers (0 - 9) and 9 one digit negative integers (-9 to -1) making 19 in all.
How many positive three-digit integers are divisible by neither 2 or 3?
the range of three-digit integers is from 100 to 999. Therefore, there are 300 positive three-digit integers that are divisible by neither 2 nor 3.1 day ago
How many positive integers less than 1000 have distinct digits and are even?
To determine the number of positive integers less than 1000 with distinct digits and are even, we need to consider the possible combinations of digits. Since the number must be even, the last digit must be even, giving us 5 options (0, 2, 4, 6, 8). For the hundreds digit, we have 9 options (1-9), and for the tens digit, we have 8 options (0-9 excluding the hundreds digit and the last digit). Therefore, the total number of such integers is 5 * 9 * 8 = 360.
How many 3-digit positive integers are there?
the answer would be 900
How many positive two-digit integers is the ones digit greater than twice the tens digit?
4
