## What are all the combinations for a 3 Number Lock

If each digit in a 3-digit lock contains the numbers 0-9, then each digit has 10 options, and 1,000 different combinations are possible..

## How many 3 digit number can be formed from the digits 2 3 5 6 7 and 9 which are divisible by 5 and none of the digits are repeated

∴ Required number of numbers = (1 x 5 x 4) = 20.

## How many three digits numbers can be formed using 2 3 4 and 5 with the digits being repeated

Answer. Answer: There are 24 three digits numbers.

## How many three digit codes can be formed using digits 0 9

720 possible threeThere would be about 720 possible three-digit passwords that can be formed using digits 0 through 9 if digits are repeated. THis can be calculated by getting 10P3 in a calculator.

## How many numbers between 100 and 1000 have the digit 7 exactly once

Hence, the numbers between 100 and 1000 having the digit 7 exactly once are 72 + 72 + 81 = 225.

## How many numbers can be formed from all or digits 2 3 4 5

Total Number of Numbers which can be formed by numbers 1,2,3,4,5 (without repeating digitsi) = 5*4*3*2*! = 5! = 120.

## How many 4 letter code can be formed using the first 10 letters

5040 fourHence, 5040 four-letter codes can be formed using the first 10 letters of the English alphabet, if no letter is repeated.

## How many different 3 letter combinations are there

1 Answer. 26⋅26⋅26=263=17576. If you want the letters to be unique, the calculation changes slightly.

## How many 3 digit numbers can be formed from the digits

So, required number of ways in which three digit numbers can be formed from the given digits is 5×4×3=60.

## How many 3 digit numbers can be formed from the digits 0 1 2 3 4 and 5 which are divisible by 5 when none of the digits are repeated *

Therefore 48 Three digit numbers are possible.

## What are the numbers divisible by 7

A number is divisible by 7 if it has a remainder of zero when divided by 7. Examples of numbers which are divisible by 7 are 28, 42, 56, 63, and 98. Divisibility by 7 can be checked by using long division, although this process can be quite time-consuming.

## How many three digit numbers can be formed from the digits 0 1 3 5 6 if repetitions of digits I are allowed II are not allowed

10 different three-digit numbers can be formed if repetition is not allowed . When repetition is not allowed we use permutations.

## How many 3 digit numbers are there which are divisible by 7

128 threeHence, we can say that there are 128 three digit numbers that are divisible by 7. Therefore, the correct answer for this question is option (a).

## Which is the smallest 3 digit number divisible by 7

105Hence, the least 3 digit number divisible by 7 is 105.

## How many 2 digit numbers are there

90 twoHow many two-digit numbers are there? There are 90 two-digit numbers in all.

## Can 3 digit numbers start with 0

Rule 1 : If zero(0) is one of the digit then you can not make a smaller number start with zero. So in that case first digit will be the digit which is greater than 0 and less than other given digits. Example: Form all possible three digit number from 0,2 and 6.

## How many numbers exactly have 4 digits

9000 fourFOUR – DIGIT NUMBERS are the numbers that have four digits, i.e. they have ones, tens, hundreds and thousands places. In fact, to find the number of numbers between any two given numbers, we use the same formula. Therefore, there are 9000 four digit numbers in all.

## How many three digit numbers are divisible by 7 leaves a remainder 3 in each case

129When a three digit number divided by 7 and leave 3 as remainder are Hence 129 number are divided by 7 which leaves remainder is 3.

## How many 5 digit numbers can be made using 1 2 3 4 5 at least a digit repeated

120 5{1, 2, 3, 4, 5} –> 120 5-digit numbers possible with this set.

## How many numbers can be formed from the digits 1 2 3 and 9 if repetition of digits is not allowed

Hence, the number of required numbers =(4+12+24+24)=64.

## How do you crack a 3 digit combination lock

Turn the lock until the numbers read right-side-up. Roll the left-most dial until the first number of your combination lines up with the scored hash mark just to the left of the dial. Roll the middle dial until the appropriate number lines up with the number to its left. Do the same for the right-most number.