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Earn +20 ptsQ: How many combinations are there for a 8 digit number 1-8?
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What is the smallest 4 digit number whose digits add up to 18?
22
What a 28 digit number called?
It is called a 28-digit number!
What is a 18 digit number called?
Oh, dude, an 18-digit number is called... wait for it... an 18-digit number! Like, it's literally just a number with 18 digits. So, if you ever need to describe a number with 18 digits, you can impress your friends by calling it an 18-digit number. Mind-blowing, right?
How many different 3 digit numbers can you write with the digits 0 2 4 6 - using a digit only once in a number?
18
How many 2 digit numbers are divisible by 5?
There are 18 numbers with 2 digits that are divisible by 5. First 2 digit number is 10 → 10 ÷ 5 = 2 → first 2 digit number divisible by 25 is 5 × 2 Last 2 digit number is 99 → 99 ÷ 5 = 19 4/5 → last 2 digit number divisible by 5 is 5 × 19 → There are 19 - 2 + 1 = 18 numbers with 2 digit divisible by 5.
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