The digits in the decimal 0.07007000700007… follow a pattern where there are increasing 0s before a 7. There is one 0 and a 7, then two 0s and a 7, three 0s and a 7, and so on.
What is the 1000th digit after its decimal point?
Find a 10 digit number where the first digit is how many 0's in the number. The second digit is the number of 1's in the number. The third digit gives the number of 2's The fourth digit gives the number of 3's in the number so on until the 10th digit which gives the number of 9's in the number.
Find the sum of all whole numbers whose digits are strictly increasing?
Examples of such numbers are 5, 379, and 12345789 Some non-examples are 22, 102, and 123456798
A 9-digit number has a property that the first 'n' digits are divisible by 'n'. There is no '0' in the number and all the digits in the number are distinct. What is the number?
Numbers in circles follow the pattern shown below. In which horizontal row of circles does the number 1001 first appear?
