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There are 17 such numbers.
3 digit numbers are lessthan 4 digit numbers
A 3 or 4 digit number.
3897
Answer1 x 9 (number of 1 digit numbers) plus 2 x 89 (number of 2 digit numbers) plus 3(number of 3 digit numbers) x 347 = 1228 The correct answer is 1323. Here is how you do it.1 digit numbers = 92 digit numbers = 90 (99-9) number of 2 digit numbers - number of 1 digit numbers3 digit numbers = 378 (477-99) number of 3 digit numbers - number of 1 & 2 digit numbersSo, the solution is:1x9 = 92x90 = 1803x378 = 11349+180+378 = 1323
A typical credit card has sixteen numbers. The first set of six digits number is the issuer identifier, and the last digit number is called the check digit that is generated to satisfy certain conditions. The set of nine digits number left in the middle is the account number of the credit card. www.creditcardshelplines.com
Hard to tell.You could be any number of hundreds, thousands, millions, billions, plus 16 or 27 or 38 or 49.All of those satisfy your conditions.
If the number is odd, the last digit is odd. That means the ten's digit must be twice the one's digit. There are only four two-digit numbers where the ten's digit is twice the one's digit: 21, 42, 63, 84. Check which of these satisfy all the clues.
There are 17 such numbers.
3 digit numbers are lessthan 4 digit numbers
The most obvious instance is 1310. Any number which is a multiple of 13 more or less than this would satisfy the conditions, eg 1310 + 52 = 1362 or 1310 - 91 = 1219 etc etc.
A 3 or 4 digit number.
3897
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
There are four of each.
Answer1 x 9 (number of 1 digit numbers) plus 2 x 89 (number of 2 digit numbers) plus 3(number of 3 digit numbers) x 347 = 1228 The correct answer is 1323. Here is how you do it.1 digit numbers = 92 digit numbers = 90 (99-9) number of 2 digit numbers - number of 1 digit numbers3 digit numbers = 378 (477-99) number of 3 digit numbers - number of 1 & 2 digit numbersSo, the solution is:1x9 = 92x90 = 1803x378 = 11349+180+378 = 1323
There are ten million numbers that satisfy that description !Here are 3 of them:103,752,986273,054,321963,750,246