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91 five-digit numbers are written

How many different three-digit numbers can be written using the digits 4, 5, 6, and 7? Use each digit only once in a number.Is
1. 0 answers
2. asked by Tony
3. 837 views
Find the number of five digit numbers less than 40,000 in which the 33 digit numbers formed by consecutive digits are all
1. 1 answer
2. 67 views
Write five-digits numbers at random but written numbers are not to be written again. How many times of writing at least can
1. 0 answers
2. asked by Natni
3. 552 views
how many 2 digit numbers can be written so that the second digit is greater than the digit before it ?
1. 1 answer
2. asked by lindy
3. 1,145 views
a person starts writing all 4 digit numbers .how many times had he written the digit 2
1. 0 answers
2. asked by devi
3. 823 views
the hundred thousands digit of a six-digit even numbers is 3 more than the thousand digit,which is twice the ones digit.give at
1. 1 answer
2. asked by louie
3. 711 views
Find the sum of all 3-digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of
1. 5 answers
2. asked by rohit
3. 1,440 views
A 4-digit number is selected from the numbers {1,2,3,4,5,6} where the digits are selected without replacement.How many 4-digit
1. 0 answers
2. asked by Carrie
3. 745 views
The number uses every number 0-9 the numbers are used only once the fourth digit is 4 the first digit in the billions place is 3
1. 4 answers
2. asked by Anonymous
3. 1,292 views
How many international direct-dialing numbers are possible if each number consists of a four-digit area code (the first digit of
1. 1 answer
2. asked by Kal Jay
3. 1,850 views