Hi, my name is George Trinh. Here I have a question as follows: In the word "CANADA", if only 3 letters can be selected at one time to form a 3-letter word, the letter "A" can be repeated, and the 3-letter words do not need to have any meanings. How many different 3-letter words can be formed ? The correct answer is 34. But how can we prove, mathematically, by mathematic formula that the answer is equal to 34 ? Can anybody out there please kindly help me solve this problem ? Thanks a million in advance.
2006-11-21 13:21:02 · 2 answers · asked by FieryDragon 6 in Education & Reference ➔ Other - Education
what kind of teacher would teach this crap? there is no reason for this at all!!!
2006-11-21 13:25:36 · answer #1 · answered by oceandollhouse 2 · 0⤊ 0⤋
4-3|m+2|>-14 subtracting 4 from the two aspects => -3|m+2|>-18 dividing the two aspects via -3 which variations the process the inequality => |m+2| < 6 assuming m is actual => (m+2)^2 < 36 => m+2 < ±6 => m < -2 ±6 => -8 < m < 4
2016-12-29 07:47:14 · answer #2 · answered by ? 3 · 0⤊ 0⤋