They break down very large numbers into groups of 3 from right to left thus making them easy to read as for example 30,000,000,000 is thirty billion
101 and 111 are the two numbers between 100 and 120 that read the same way forward and backward.
Add the numbers into one variable as you read them in. But if you prefer, you can read the numbers into an array and then use a loop to add the numbers together.
So, you want to know how many whole numbers there are between 10-99. Easiest way to think of this is to ask yourself, how many pages did you read if you read 10-99 inclusive? At first thought you might say 99-10=89. So, let's look at something easier. How many pages did you read if you read 2-5 INCLUSIVE? The answer is 4, not 3. So, 99-10+1=90. So, there are 90 whole numbers less than 100. Or, 99 minus 1,2,3,4,5,6,7,8,and 9 (the only single digit #'s) = 90, not counting negative numbers.
Palindrome numbers are numbers that read the same backwards and forwards, like 32923
They break down very large numbers into groups of 3 from right to left thus making them easy to read as for example 30,000,000,000 is thirty billion
101 and 111 are the two numbers between 100 and 120 that read the same way forward and backward.
Palindrome Not just for numbers, either.
Add the numbers into one variable as you read them in. But if you prefer, you can read the numbers into an array and then use a loop to add the numbers together.
Infinitely many. For example: 8, 88, 888, 8888, etc
So, you want to know how many whole numbers there are between 10-99. Easiest way to think of this is to ask yourself, how many pages did you read if you read 10-99 inclusive? At first thought you might say 99-10=89. So, let's look at something easier. How many pages did you read if you read 2-5 INCLUSIVE? The answer is 4, not 3. So, 99-10+1=90. So, there are 90 whole numbers less than 100. Or, 99 minus 1,2,3,4,5,6,7,8,and 9 (the only single digit #'s) = 90, not counting negative numbers.
There are 120 possible sets.
$1,015,000 is the usual form in the US. Other parts of the world use a dot or period [stop] to separate the groups of three digits instead of a comma. The demarcations make the numbers much easier to read.
The Times target socio-economic groups A and B, whereas The Sun targets groups C to E.
The disability that causes you not to be able to read numbers is called dyslexia. Dyslexic people struggle with reading and writing numbers.
They're simply used for clarity - to make the number easier to read.
Many numbers have fourteen zeros. You are probably thinking of 100,000,000,000,000 which is read as a hundred trillion.