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Choose a digit from 1-9 Make numbers that add to 1000 using only the digit you chose You can only use your digit eight times?
Wiki User
∙ 15y ago
The sum 9 + 99 + 999 + 9999 + 99 999 + ....
where the last number to be added consists of nine digits of 9 becomes:
(10 – 1) + (100 – 1) + (1000 – 1) + (10 000 – 1) + ...
where the last multiple of 10 has nine zeros.
There are nine pairs of brackets altogether.
Add the multiples of 10 first and then subtract 9:
The digit 1 appears 9 times in the final answer.
humany_human2020
Wiki User
∙ 15y agoUsing exactly eight 9's : 999 + ( 99/9 ) - ( 9/ .9 ) [ 999 + 11 - 10 = 1000 ] or (999 + 9/9) x ( 99-9) [ (999 +1 ) x 1 ] --(obviously the five 9's are enough : 999 + 9/9 )
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How many 7 digit numbers are there if 0 and 4 cannot be the leading number?
There is a choice of 8 digits for the first digit and a choice of 10 digits for each of the remaining 6, so there are 8 x 106 = 8,000,000 (eight million) 7-digit numbers which do not start with 0 or 4.
How many combinations are there for a 8 digit number 1-8?
Using the eight digits, 1 - 8 ,-- There are 40,320 eight-digit permutations.-- There is 1 eight-digit combination.
What is the place value of the digit 8 in 228094?
The digit 8 represents eight thousands.
What value does the digit 8 have in the number 805613?
Eight hundred thousand.
What digit is in the hundredths place in 458.08?
the eight all the way to the right
How 99999999 numbers are 8 digit number there in?
There are not 99999999 eight digit numbers - unless you allow numbers with leading 0s.
How many 2 digit numbers have one digit that is twice the other?
Eight (8) of them do.They are1221243642486384 .
How many 2 digit numbers are divisible by 3 and 4?
Eight of them.
When were five-digit local phone numbers last used in Portsmouth UK?
Definitely earlier than the year 2000. In April 2000, Portsmouth moved from six-digit local numbers to eight-digit numbers, as well as changing to the new, short area code of 023. (For example, Portsmouth City Council's number changed from 822251 to 92822251.) Instructions at the time referred only to how to convert six-digit local numbers to eight-digit numbers, so it is reasonable to assume that no five-digit numbers remained at that time.
Can you get 1000 as an answer when you add up eight similar single digit numbers?
No. The largest value you can get from adding eight 1-digit numbers is 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 8*9 = 72
What if the largest period 52 million does not have three numbers is it still a digit Example 52355500 IS this a two digit number or three?
52,355,500 is an eight-digit number.
How many 2 digit numbers can you get using 1 and 2 and 6 and 7?
eight
What are the odd 4 digit numbers using digits 1470?
1047, 1407, 4017, 4071 are four (out of eight) such numbers.
How do you spell numbers digit by digit?
you say one number first then the other one for example 789 you say seven eight and then nine
What is the least possible eight digit number without repeating any digit?
Assuming whole numbers and a leading zero does not count: 10,234,567
How many 3 digit numbers divisible by 9 can be formed from the digits 0123456789?
There are 76 such numbers. Eight more if you allow numbers to start with 0.
How many 7 digit numbers are there if 0 and 4 cannot be the leading number?
There is a choice of 8 digits for the first digit and a choice of 10 digits for each of the remaining 6, so there are 8 x 106 = 8,000,000 (eight million) 7-digit numbers which do not start with 0 or 4.
