Arrangements of digits with repeats under a place or parity condition
This type of question, asked 2 times: 24 Jan 2023, 30 Jan 2023. All 2 questions below, oldest first.
Try each one first, then open its answer.
Question 1
24 Jan 2023
86The number of 9-digit numbers, that can be formed using all the digits of the number 123412341 so that the even digits occupy only even places, isQuestion 2
30 Jan 2023
180The number of seven digits odd numbers, that can be formed using all the seven digits is