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Earn +20 ptsQ: What 4 digit number times 4 equals the same 4 digits backwards?
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What number is the 2nd and 5th digits added eqal the 1st digit and the 2nd digit doubled equals the last digit and the last digit is a prime number amd the 3rd digit is four times the value of the las?
Let's assume there are 5 total digits, although that would have been handy information to include. All we can deduce from the available information is 4 of the digits. 318_2 There are ten possible digits for the 4th number, leaving 10 possible numbers.
What is the highest 9-digit number with no digits alike?
987654321 is the highest nine-digit number with no repeated digits.
What is the largest 10-digit number with no repeated digits?
The largest ten digit number with no repeated digits is '9876543210'.
What is the number of possible 9 digit social security numbers if the digits can't be repeated?
9x8x7x6x5x4x3x2x1 or 9! which equals 362880 possible combinations if no digits are repeated
What is the greatest four-digit even number with no repeated digits?
The greatest 4-digit number with no repeated digits is... 9876
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