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Rich chooses a 4-digit positive

Rich chooses a 4-digit positive integer. He erases one of the digits of this integer. Theremaining digits, in their original
1. 0 answers
2. asked by Zayan
3. 1,081 views
John chooses a 5-digit positive integer and deletes one of its digits to make a 4-digit number. The sum of this 4-digit number
1. 9 answers
2. asked by Amitabha
3. 4,641 views
Billy chooses three dfferent non-zero digits and makes six different 3-digit numbers with no digit repeated in any number. He
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2. asked by mariana
3. 608 views
Find the sum of all 3-digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of
1. 5 answers
2. asked by rohit
3. 1,395 views
From the digits 1, 2, 3, and 4, how many positive integers are less than 100,000? Consider the possibilities for 5-digit,
1. 1 answer
2. asked by Sebastian
3. 1,275 views
Find a three-digit positive integers such that the sum of all three digit is i4, the tens digit is two more than ones and if the
1. 1 answer
2. asked by Maria Christina
3. 926 views
Don chooses a positive integer less than 11 which he calls a and an integer b such that 11<=b<=20. He adds all the positive
1. 2 answers
2. asked by Lone
3. 501 views
For every positive 2-digit number, x, with tens digit t and units digit u , let y be the 2 digit number formed by reversing the
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2. asked by reena
3. 970 views
How many positive four-digit integers $N$ have the property that the three-digit number obtained by removing the leftmost digit
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2. asked by Lily
3. 82 views
If you have the sume of squares of the digits of a positive two-digit number is 20, the tens digit is 2 more than the units
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2. asked by Joey
3. 483 views