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How many ways can a phone number be created if there are ten ways that the first three digits can be arranged and then each of the remaining four digits can be any digit from 0 to 9?
Wiki User
∙ 10y ago
One hundred thousand. Since the first set of three digits has been assigned 10 possible permutations, then just let a digit 0 through 9 (ten possibilities) represent that set, then you have the other four digits, so you have a five digit permutation, {0-9} in each position. So we have from 00000 to 99999, which is 100,000 possibilities. Or if you want to think of it a different way, each three digit exchange can have ten thousand numbers 0000 to 9999. There are 10 exchanges, so multiply 10,000 by 10 = 100,000.
Wiki User
∙ 10y ago
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How many such digits are there in the number 27561493 each of which is as far away from the beginning of the number as when the digits are arranged in descending order within the number?
None of them. The digits, arranged in descending order, are: 97654321 9 is 1 digit from the start 7 is 2 digit from the start etc So none.
What is the significance of 8549176320?
The number 8549176320 has all the digits arranged in alphabetical order.
What is The Largest 7 Digit Number Formed With 7 As One Of The Digits And 1 Remaining Digits?
As a string, the largest number is 7111111.
The smallest 12- digit number where repeated digits are allowed?
The first digit would have to be 1, the remaining digits, zero.
How many such pairs of digits are there in number 36725918 each of which has as many digits between them in the number as when the digits are arranged in descending order within the numbers?
The number is: 36725918 In descending order that is: 98765321 The pairs of numbers that have as many digits between them in both are: 3,9 5,8 6,7 So there are three pairs.
What is 854917632?
It's the only number where the digits are arrange alphabetically, eight...five...four...nine...one...seven...six...three...two...zero. Actually, that answer is not completely true as stated. If you were to plug this number into Google you would find this same answer all over the web. It doesn't take a genius to realize that it is NOT the ONLY number where the digits are arranged alphabetically. For example, drop the 0 at the end and you STILL have a number that is arranged in alphabetical order. The answer should probably say, "It's the only number using all digits between zero and 9, that is arranged in alphabetical order".
How manys ways can the digits in the number 7422222 be arranged?
The 7 can go in any of seven places and the 4 in any of the remaining 6. It is irrelevant which 2 goes where so there are 7 x 6 ie 42 possibilities which result in distinct sequences.
How to check the divisibility by 23?
Multiply the last digit by 7. Subtract that number from the remaining digits. If that number is divisible by 23, then the original number is divisible by 23.
What is the largest number that can be created using two digits?
99
How many 4 digit pin numbers are available if no number is repeated?
The first digit can be any one of 10 digits. For each of those . . .The second digit can be any one of the remaining 9 digits. For each of those . . .The third digit can be any one of the remaining 8 digits. For each of those . . .The fourth digit can be any one of the remaining 7 digits.The total number of possibilities is (10 x 9 x 8 x 7) = 5,040
How many numbers does US has including area code?
The US uses ten digits in their number format. For example - the number would look like 800-123-1234. In that example, 800 is the area code, and the remaining 7 digits are the subscribers number.
What is 3 digits plus 3 digits and equals 3 digits only using numbers 1 through 9 without carrying a number?
There is no solution to this problem. If each digit can be used once only then we have 5 odd numbered digits (1,3,5,7,9) and 4 even numbered digits (2,4,6,8). To create the two numbers that are added together requires the following combinations of digits. 5 Odd & 1 Even ....when added these will generate 2 Even digits & 1 Odd digit but the remaining digits are 3 Even. 4 Odd & 2 Even. These will generate 3 Even digits OR 1 Even digit & 2 Odd digits but the remaining digits are 1 Odd & 2 Even. 3 Odd & 3 Even. These generate 3 Odd digits OR 2 Even & 1 Odd digits but the remaining digits are 2 Odd & 1 Even. 2 Odd & 4 Even. These generate 3 Even digits OR 2 Odd & 1 Even digits but the remaining digits are 3 Odd & no Even.
