How many 3 digit numbers can be formed using the digits 2 3 4 and 5 as often as desired?
Problem 2: How many 3-digit even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 if the digits can be repeated? Solution: Answer: 108. Show
How many three digit number can be formed from the digits 1,2 3 and 4 if the digits can be used only once?But there are 4 different numbers. So the number of 3-number combinations are- (1,2,3),(1,2,4),(1,3,4),(2,3,4). Each can be arranged in 6 ways, so we get 24 ways totally. How many even 3-digit numbers can be formed from the digits 1/2 5/6 and 9 without repeating any digits?Correct Option: D (4 - 2)! Total ways = 3 × 4 × 2 = 24 ways. {∵ Total available digits are 1, 2, 5, 6, 9. How many numbers can be formed using all the digits 1,2 3 4 3 2 1 such that even digits always occupy even places?Expert-verified answer We can form 7 digits numbers. How many 3-digit numbers can be formed from the digits 1,2 3 if repetition is allowed?Answer: 125 As repetition is allowed, So the number of digits available for B and C will also be 5 (each). How many 3 digit numbers can be formed using digits 4,5,6,7,8 if digits repeated, not repeated
How many 3 digit numbers can be formed with the digits 1,2 3 4 5 repetition of digits not allowed?Problem 2: How many 3-digit even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 if the digits can be repeated? Solution: Answer: 108. Let 3-digit number be XYZ. How many three digit numbers can be formed using the digits 0 1 3 5 6 7 If I repetition of digits is not allowed II repetition of digits is allowed?Therefore, a total of 100 3 digit numbers can be formed using the digits 0, 1, 3, 5, 7 when repetition is allowed. How many numbers can be formed using all of the digits 1/2 and 3 exactly once?Originally Answered: How many 3-digit numbers can be formed using only1, 2, 3? This is because you have space for three digits that can be chosen from the set [1,2,3]. So you can make 27 three digit different numbers . How many numbers can be formed with the digits 2 3 4 5 4 3 2 so that the odd digits occupy the odd places?Required number of numbers =(3×6)=18. How many numbers can be formed by using all the digits 1 2 3 4?Total Number of Numbers which can be formed by numbers 1,2,3,4,5 (without repeating digitsi) = 5*4*3*2*! = 5! = 120. Now, in half them unit's digit will be bigger than the ten's digit and in half of them it will be smaller. How many 3 digit numbers can be formed using the digits 2 3 4 and 5 as often as desired?I was able to get this question, by changing 2, 3, 4 and 5 to 1, 2, 3 and 4; then multiplying 4 by 3 by 2 to give 24 possibilities. How many 4 digit numbers can be formed from 1 2 3 4 and 5 if repetitions are not allowed?Answer. 120 numbers. Case:2 when repetition is allowed. How many 3 digit numbers can be formed from the digits 2 3 5 6 and 7 which are divisible by 4 and none of the digits is repeated?∴ Required number of numbers = (1 x 5 x 4) = 20. How many three digit multiples of 3 can be written using numbers 1 3 5 9 of all digits are different?Answer: 195, 531, 591, 135, 315, 351 etc. How many numbers can be formed with the digits 1 6 7 8 6 1 so that the odd digits always occupy the odd places?Total ways = 2 * 9 = 18 ways. How many 7 digit numbers can be formed using the digits?Hence, the required number of 7 digit numbers = 420 - 60 = 360. How many three digit odd numbers can be formed by using the digits 1,2 3 4 5 6 If I the repetition of digits is not allowed II the repetition of digits is allowed?How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that repetition of the digits is not allowed. = m x n x p = 5 x 4 x 3 = 60. How many 3 digit numbers can be formed using the digits 0 1 2 and 5 if repetition of digits is not allowed?The different 3-digit numbers which can be formed by using the digits 0, 2, 5 without repeating any digit in the number are 205, 250, 502 and 520. Therefore, four 3 digit numbers can be formed by using the digits 0, 2, 5. How many 3 digit numbers can be formed by using the digits 1 to 9 if digits can be repeated?⇒So, the required number of ways in which three-digit numbers can be formed from the given digits is 9×8×7=504. How many numbers can be formed from the digits 1 3 5 9 if repetition of digits is not allowed?Hence, 64 numbers can be formed. How many four digit numbers can be formed using the digits 2 3 5 1 7 9 |