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How many numbers can be formed using the digits 37 and 9 without repetition?
15 of them.
How many 3-digit numbers can be formed using the digits 1 2 3?
27
How many 4-digit numbers can be formed by the digits 1 1 2 2 using the digits more than once?
6
How many 3 digit numbers can be formed using even digits only?
More than one
How many 2-digit numbers can be formed using the digits 1 3 7 if repetition of digits is allowed?
Possible solutions - using your rules are:- 11,13,17,31,33,37,71,73 &77
How many 6 digit numbers can be formed using the digits 123456789?
There are 60480 numbers.
How many six digits numbers can be formed using 1234?
There are 4^6 = 4096 such numbers.
How many three digits numbers can be formed using 3 and 7?
8.
How many four digits numbers can be formed using 0578?
If the digits are all different then 18. Otherwise, 192.
How many numbers can be formed using the digits 37 and 9 without repetition?
15 of them.
How many 3-digit numbers can be formed using the digits 1 2 3?
27
How many 4-digit numbers can be formed by the digits 1 1 2 2 using the digits more than once?
6
How many three digit numbers can be formed using 01234?
48 of them if digits may not be repeated. 100 if they can.
How many 3 digit numbers can be formed using even digits only?
More than one
How many 2-digit numbers can be formed using the digits 1 3 7 if repetition of digits is allowed?
Possible solutions - using your rules are:- 11,13,17,31,33,37,71,73 &77
How many five digit numbers can be formed using the digits 12345?
To form a five-digit number using the digits 1, 2, 3, 4, and 5, each digit must be used exactly once. Since there are 5 unique digits, the total number of different five-digit numbers that can be formed is given by the factorial of the number of digits, which is 5! = 120. Therefore, 120 different five-digit numbers can be formed using the digits 12345.
How many 5 digits can be formed using the digits 0 2 3 4 5 when repetition is allowed that the number formed is divisible by 2 and 5 or both?
There are 2000 such numbers.
