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How many odd numbers between 1000 and 9999 have distinct digits?
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How many integers with distinct digits are there between 1000 and 9999 such that the absolute value of the difference between the first and the last digit is 1?
952 of them.
How many numbers between 100 and 1000 have 2 as the units digits?
91.
How many numbers between 100 and 1000 have their digits adding up to 5?
16
How many integers with distinct digits are there between 1000 and 9999 such that the absolute value of the difference between the first and the last digit is 3?
An infinite amount
How many prime numbers are there whose square has 5 or 6 digits?
solution: we know that there are 25 prime numbers are between 1-100 and 168 prime numbers less than 1000. 100 x 100=10000(5 digits) 999 x 999=998001(6 digits) 1000 x 1000=1000000(7 digits) so our answer should be same as the number of prime numbers between 100 to 999. hence, 168-25=143. 143 prime numbers will be there less than 1000 whose square has 5 or 6 digits.
How many odd integers between 1000 and 9999 have distinct digits?
There are 120 of them.
How many digits in the numbers between 1000 and 1128?
123
How many integers between 1000-9999 have distinct digits?
9*9*8*7 = 4536
How many digits are there between 1 and 1000?
Not couting 1 and 1000, there would be 998 numbers.
How many integers with distinct digits are there between 1000 and 9999 such that the absolute value of the difference between the first and the last digit is 1?
952 of them.
How many numbers are there between 100 and 1000 such that atleast one of their digits is 7?
252 of them.
How many numbers between 100 and 1000 have their digits adding up to 5?
16
How many numbers between 100 and 1000 have 2 as the units digits?
91.
How many integers with distinct digits are there between 1000 and 9999 such that the absolute value of the difference between the first and the last digit is 3?
An infinite amount
How many prime numbers are there whose square has 5 or 6 digits?
solution: we know that there are 25 prime numbers are between 1-100 and 168 prime numbers less than 1000. 100 x 100=10000(5 digits) 999 x 999=998001(6 digits) 1000 x 1000=1000000(7 digits) so our answer should be same as the number of prime numbers between 100 to 999. hence, 168-25=143. 143 prime numbers will be there less than 1000 whose square has 5 or 6 digits.
How many numbers are there between 0 and 1000 which have exactly one of their digits as 5?
it s 243..
How many positive integers less than 1000 have distinct digits and are even?
405
