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How many 80s in 4000?
There are 50 multiples of 80 between 1 and 4000, as 4000 divided by 80 equals 50. However, the question asks for the number of occurrences of the digit "8" in the range from 1 to 4000, not the number of multiples of 80. The digit "8" appears in the units place for numbers 8, 18, 28, ..., 3998, occurring 500 times. Additionally, it appears in the tens place for numbers 80, 81, ..., 89, 180, 181, ..., 189, and so on, occurring 400 times. Therefore, the digit "8" appears 900 times in the range from 1 to 4000.
How many palindromes are there between 900 - 1900?
-1000
If you write 1 to 1000000 how many single digits are there?
There are 9 single digits (1, 2, 3, 4, 5, 6, 7, 8, 9) that are repeated throughout the numbers from 1 to 1000000. Each single digit appears 100,000 times (except for 0, which appears 100,000 times as well). Therefore, there are a total of 900,000 single digits in the range from 1 to 1000000.
What is the digit in the units place of a number is 5 if the no lies between 150 and 200 will be composite or prime?
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
How many 5 digit combinations are there from 1-20?
To find the number of 5-digit combinations from 1 to 20, we first calculate the total number of options for each digit position. Since the range is from 1 to 20, there are 20 options for the first digit, 20 options for the second digit, and so on. Therefore, the total number of 5-digit combinations is calculated by multiplying these options together: 20 x 20 x 20 x 20 x 20 = 3,200,000 combinations.
What is the program to figure out how many numbers from 0 to 9 are needed for 1 to 89 for example?
#include<iostream> #include<array> #include<sstream> std::array<int,10> get_frequency (int range_min, int range_max) { if (range_max<range_min) std::swap (range_min, range_max); std::array<int,10> digit {}; for (int count {range_min}; count<=range_max; ++count) { std::stringstream ss {}; ss << count; std::string s {}; ss >> s; for (auto c : s) { ++digit[c-'0']; } } return digit; } int main () { std::array<int,10> digit {}; digit = get_frequency(1, 89); std::cout << "In the range 1 to 89...\n"; for (int d {0}; d<10; ++d) { std::cout << "\tthe digit " << d << " appears " << digit[d] << " times.\n"; } } Output: In the range 1 to 89... the digit 0 appears 8 times. the digit 1 appears 19 times. the digit 2 appears 19 times. the digit 3 appears 19 times. the digit 4 appears 19 times. the digit 5 appears 19 times. the digit 6 appears 19 times. the digit 7 appears 19 times. the digit 8 appears 19 times. the digit 9 appears 9 times.
How many 11 digit numbers are there?
Eleven digit numbers are those in the range between 9,999,999,999 and 100,000,000,000 exclusive. There are 90,000,000,000 of these.
How many times does 1to50 2?
To clarify your question: If you're asking how many times the number 2 can be counted from 1 to 50, here’s the breakdown: The number 2 appears in the following sequence as a single digit: 2, 12, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 32, 42. In the number 22, the digit 2 appears twice. Let's count the occurrences: In the range 1 to 9, 2 appears once. In the range 10 to 19, 2 appears once (12). In the range 20 to 29, 2 appears 11 times (20, 21, 22 twice, 23, 24, 25, 26, 27, 28, 29). In the range 30 to 39, 2 appears once (32). In the range 40 to 49, 2 appears once (42). In the range 50, 2 does not appear. Summing these, the total number of times the digit 2 appears from 1 to 50 is: 1 (from 1-9) + 1 (from 10-19) + 11 (from 20-29) + 1 (from 30-39) + 1 (from 40-49) = 15 times. So, the digit 2 appears 15 times in the numbers from 1 to 50.
How many 80s in 4000?
There are 50 multiples of 80 between 1 and 4000, as 4000 divided by 80 equals 50. However, the question asks for the number of occurrences of the digit "8" in the range from 1 to 4000, not the number of multiples of 80. The digit "8" appears in the units place for numbers 8, 18, 28, ..., 3998, occurring 500 times. Additionally, it appears in the tens place for numbers 80, 81, ..., 89, 180, 181, ..., 189, and so on, occurring 400 times. Therefore, the digit "8" appears 900 times in the range from 1 to 4000.
How many four digit numbers are found between 900 and 6000?
The smallest one in that range is 1,000. The largest one in that range is 6,000.All the numbers between 1,000 and 6,000 are 4-digit numbers. There are6,000 - 999 = 5,001of them.
How many digit 4 in numbers from 1 to 623?
Oh, it looks like you're on a little math adventure! Let's see here... In numbers from 1 to 623, there are 62 times the digit 4 appears. Isn't that just a happy little discovery? Keep exploring those numbers and enjoying the journey!
What single digit appears most frequently between and including the numbers 1 and 1,000 Hint: look for a pattern?
The single-digit that appears most frequently between and including the numbers 1 and 1000 is the digit "1". To see why this is the case, consider the following pattern: Between 1 and 9, there is one occurrence of the digit "1". Between 10 and 99, there are 10 occurrences of the digit "1" in the tens place (10, 11, 12, ..., 19) and 9 occurrences of the digit "1" in the ones place (21, 31, 41, ..., 91), for a total of 19 occurrences. Between 100 and 999, there are 100 occurrences of the digit "1" in the hundreds place (100, 101, 102, ..., 199), 100 occurrences of the digit "1" in the tens place (110, 111, 112, ..., 119, 121, 131, ..., 191, 201, ..., 291, 301, ..., 391, ..., 901, ..., 991) and 9 occurrences of the digit "1" in the ones place (101, 111, 121, ..., 191), for a total of 210 occurrences. Adding up the number of occurrences for each range, we get: 1 + 19 + 210 = 230 Therefore, the digit "1"
How many palindromes are there between 900 - 1900?
-1000
What does mean mode and range mean?
Its range, median, and mode.Range is the distance between the two farthest numbers out.Median is the middle number.And mode is the number that appears the most.
How many 5 digit numbers are odd?
The first 5 digit number is 10,000 and the last is 99,999. Thus there are 90,000 numbers between that range. Half of them are odd & half are even. 45,000 each
How many palindromic numbers are there between ten and hundred thousand?
1089.ExplanationA two digit palindrome will have the form AA, with A a digit between 1 and 9 (if A were zero, then this would not be a two digit number). So there are 9 possibilities for A and nine two-digit palindromes.A three digit palindrome will have the form ABA, with A a digit between 1 and 9 (if A were 0, this would not be a three digit number) and B a digit between 0 and 9. So there are 9 possibilities for A and 10 for B. There are thus 9*10=90 three digit palindromes.A four digit palindrome will have the form ABBA, with A a digit between 1 and 9 (if A were 0, this would not be a three digit number) and B a digit between 0 and 9. So there are 9 possibilities for A and 10 for B. There are thus 9*10=90 four digit palindromes.A five digit palindrome will have the form ABBBA, with A a digit between 1 and 9 (if A were 0, this would not be a three digit number) and B and C each a digit between 0 and 9. So there are 9 possibilities for A, 10 for B, and 10 for C. There are thus 9*10*10=900 five digit palindromes.Adding the above, we get a total of 9+90+90+900=1089 palindromes in the range.
How many 4 digit numbers that are multiples of 9?
Well, honey, to find the number of 4-digit multiples of 9, you just need to divide the largest 4-digit multiple of 9 (9999) by 9 and subtract the smallest 4-digit multiple of 9 (1008) divided by 9. So, 9999 ÷ 9 - 1008 ÷ 9 = 1111 - 112 = 999. That's right, there are 999 4-digit numbers that are multiples of 9.
