Ask a New Question
Search
How many positive integers less than 10^20 have all their digits the same?
1 answer
9 1-digit
9 2-digits
...
9 20-digits
Looks like 180
Ask a New Question
or
answer this question
.
Similar Questions
1.How many positive integers five-digit integers end with the digit 0? 9x10x10x10x? what number would represent zero
2.Using the
3 answers
Find how many positive integers with exactly four decimal digits, that is, positive integers between 1000 and 9999 inclusive,
1 answer
Let S(n) denote the sum of digits of the integer n. Over all positive integers, the minimum and maximum values of S(n)/S(5n) are
1 answer
1.How many positive three-digit integers can be made from the digits {3,4,5,6,7} if digits may be repeated? 5x4x3=60
2.In how
1 answer
more similar questions