Table of Contents
- 1 What is an 8 digit number?
- 2 How many different 8 digit sequences can be formed using the digits 0 1 9 if repetition of digits is allowed?
- 3 How many telephone connections may be allotted with 8 digits from the numbers 0 to 9?
- 4 How many unique 4 digit numbers are there?
- 5 What is the smallest and greatest 8 digit number?
What is an 8 digit number?
What is the Smallest 8 Digit Number? The smallest 8-digit number is 10000000 which is read as one crore in the Indian system and ten million in the international system. The smallest 8 digit number is obtained by adding 1 to the largest 7 digit number, which is 9999999. Adding 9999999 + 1 gives us 1,00,00,000.
How many different 8 digit sequences can be formed using the digits 0 1 9 if repetition of digits is allowed?
That makes 45 choices. Perhaps you meant the number of possible 8 digit combinations of 0-9 where order does matter.
How many 8 digit numbers can be formed if the leading digit Cannot be 0 and the last number Cannot be 1?
Since only 0 and 1 are to be used, an 8 digit number will have a leading 1. The rest 7 places are free to be either 0 or 1 and can make 2^7 or 128 unique numbers.
How many different 8 digit combinations are there?
When you have 8 digits you have one hundred million combinations, so there is a chance of three to one hundred million, that you will make a correct guess.
How many telephone connections may be allotted with 8 digits from the numbers 0 to 9?
2520 ways
Thus we can form 8 – digit telephone numbers using 0 to 9 digits in 2520 ways.
How many unique 4 digit numbers are there?
10,000 possible combinations
There are 10,000 possible combinations that the digits 0-9 can be arranged into to form a four-digit code.
How many four-digit odd numbers can be formed if no digit can be repeated?
How many four-digit odd numbers do not use any digit more than once? The answer is C, 2240. Explanation from the book makes more sense now that I’ve thought about it a bit more.
What is the 7-digit greatest number?
99,99,999
The greatest 7-digit number is 99,99,999. The smallest 6-digit number is 1,00,000. Their difference is 99,99,999-1,00,000 = 98,99,999. The predecessor of 98,99,999 is the number that comes just before it, and it is 98,99,998.
What is the smallest and greatest 8 digit number?
So yes 99999999 is the greatest 8-digit number. This option is right as it is the greatest 8-digit number. Let’s check option (b), 1 is the greatest digit in this number and here the number of digits is 8 and 1 is followed by 7 zeros. So 10000000 is the smallest 8-digit number.