How many distinct four-digit numbers are divisible by 3 and have 23 as their last two digits?( )A.27B.30C.33D.81E.90 答案 B相关推荐 1How many distinct four-digit numbers are divisible by 3 and have 23 as their last two digits?( )A.27B.30C.33D.81E.90 反馈...
How many different codes of four digits are possible if the first digit must be 3, 4, or 5? How many four-digit numbers can there be if repetition of numbers are allowed and if repetition of numbers are not allowed? How many str...
To solve the problem of how many four-digit even integers can be formed using the digits 0, 1, 2, 3, 4, and 5, we will consider two cases: when digits can be repeated and when digits cannot be repeated.Case 1: Digits can be repeated</st
Step by step video, text & image solution for How many four digit numbers abcd exist such that a is odd, b is divisible by 3, c is even and d prime? by Maths experts to help you in doubts & scoring excellent marks in Class 12 exams.Updated on:21/07/2023Class...
How many different strings of length 9 can be formed from 26 letters? How many 4-letter passwords can be made using the letters a through z if the first letter must be a vowel? If there are 5 letters in a sequence, how many combinations can be made?
Subsets of {2,3,4,5,6,7,8,9} indude a singe digit up to all eigh tnumbers.Therefore,we must add the combinations of all possible subsets and subtract from each of the subsets fomed by the composite numbers. Hence: (81)−(41)+(82)−(42)+(83)−(43)+(84)−1+(85)...
Example 2: 4 choose 2 Question: How many different combinations do you get if you have 4 items and choose 2? Answer: Insert the given numbers into the combinations equation and solve. “n” is the number of items that are in the set (4 in this example); “r” is the number ...
There are 9 letters in "telephone". We are using permutations instead of combinations because order matters ("tele" and "elet" are not the same thing). Total permutations of 4 letters from 9: 9P4 = 9!/5! = 3024 However, note that "e" appears 3 times. This will lead to...
Using the answer choices, the only multiple of 15 is (D) 240.Subsets of {2,3,4,5,6,7,8,9} indude a singe digit up to all eigh tnumbers.Therefore,we must add the combinations of all possible subsets and subtract from each of the subsets fomed by the composite numbers.Hence:(81...
some casual gaming but nothing really demanding. the gtx series is where things get serious. after the gtx comes a three or four digit number, e.g. 1060, 980, or 680, where the first digit (or first two digits in a four digit number) represents the generation of the gpu, and the ...