The number is 34 a + b = 7
a = 7 − b
10a + b + 9 = 10b + a
10(7 − b) + b + 9 = 10b + 7 − b
70 − 10b + b + 9 = 9b + 7
72 = 18b
4 = b
3 = a
The number of digits increases - without limit.
9 on apex
A number is made up from digits in the numeral system. We often use the decimal system in which we use 10 digits, In writing the any number, many digits are used, even repitation of digits. when we write any number using the digits, the last digit ( from right side ) in that number is called unit digit. for example in the number 9814868980, here 0 is called unit digit.
A) If a number has two digits, then the sum of its digits is less than the value of the original two-digit number.
The last digit is always the estimated digit in a number
The number of digits increases - without limit.
9 on apex
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.
987654321 is the highest nine-digit number with no repeated digits.
The largest ten digit number with no repeated digits is '9876543210'.
If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 .If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 .If the same digit can't be used more than once, then the largest possible number has only10 digits. The number is 9,876,543,210 .
The greatest 4-digit number with no repeated digits is... 9876
It can have up to 5 digits.
The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987
Any two digit number in which: (a) the units digit is not 0, and (b) the two digits are different will form a new 2-digit number when the digits are interchanged.
Any number that has 4 or 5 digits. A digit in a number is one number place. 1 has 1 digit, 11 has 2 digits, 111 has 3 digits, and so on.
The largest ten digit number with no repeated digits is '9876543210'.