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How many numbers less than 350 can be formed from 1 2 3 4 5 6 if a digit may be repeated in a number?
138 including 1 and 2 digit numbers.
-- I'll assume that we're only talking about whole numbers, and no decimals or fractions.
-- The number can't have more than 3 digits. If it had four, it would be more than 1,000.
-- One-digit numbers . . . 6 possibilities, all less than 350.
-- Two-digit numbers . . . 6 x 6 = 36 possibilities, all less than 350.
-- In three-digit numbers . . .
. . . the first digit can be 1, 2, or 3.
. . . If the first digit is 3, then the second one can be 1, 2, 3, or 4 = 4 choices.
. . . . . . For each of the 4 choices, the third digit can be 1, 2, 3, 4, 5, or 6 = 6 choices.
. . . . . . Total possibilities beginning with a 3 . . . 4 x 6 = 24
. . . If the first digit is 1 or 2, then
. . . . . . the second digit can be 1, 2, 3, 4, 5, or 6 = 6 choices. For each one . . .
. . . . . . the third digit can be 1, 2, 3, 4, 5, or 6 = 6 choices.
. . . . . . Total possibilities beginning with 1 or 2 . . . 2 x 6 x 6 = 72
Adam up:
One-digit possibilities . . . . . . . . . . . . . . . . . . . . . . 6
Two-digit possibilities. . . . . . . . . . . . . . . . . . . . . . 36
Three-digit possibilities beginning with 3. . . . . . . 24
Three-digit possibilities beginning with 1 or 2 . . . 72
Total. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
What else can I help you with?
The total number of five digit numbers that can be be formed digits 12345 is?
It is 120 if the digits cannot be repeated.
How many 7 digit phone numbers can be formed if all the numbers can be repeated?
823543
How many 5 digit numbers can be formed from 13579?
(5 x 4 x 3 x 2) = 120 of them, if no digit can be repeated.If digits can be repeated in the same number, then 3,125numbers can be formed.
How many two-digit numbers in base ten can be formed if the tens digit cannot be 0 and no digit can be repeated?
81
How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?
7
The total number of five digit numbers that can be be formed digits 12345 is?
It is 120 if the digits cannot be repeated.
How many 7 digit phone numbers can be formed if all the numbers can be repeated?
823543
What is the biggest five digit number that can formed with 1 digit repeated?
99876
How many 5 digit numbers can be formed from 13579?
(5 x 4 x 3 x 2) = 120 of them, if no digit can be repeated.If digits can be repeated in the same number, then 3,125numbers can be formed.
How many two-digit numbers in base ten can be formed if the tens digit cannot be 0 and no digit can be repeated?
81
How many 6 digits numbers can be formed from the digit 01357 and 9 which are divisible by 10 and no digit is repeated?
There are 5! = 120 such numbers.
How many 3 digit even number can be formed from digits 123456 if the digits can be repeated?
6*6*3 = 108 numbers.
How many different 2 digit odd numbers can be formed from the digits 1 through 8 if no digits are repeated in a number?
36
How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?
7
What is the number if there is a 4 digit number no numbers are repeated the digit is odd the digit in the tens place is three times the digit in the thousands place and the sum of the numbers is 27?
3897
How many 3 digit numbers can be formed from the digits 357 with any digit repeated?
27 three digit numbers from the digits 3, 5, 7 including repetitions.
How many 4 digit numbers can be formed from digits 123456789?
5040 different 4 digit numbers can be formed with the digits 123456789. This is assuming that no digits are repeated with each combination.
