arlabbe0606
02.08.2019 •
Mathematics
How many 2-letter combinations can be made from the letters a, b, c, and d? a. 4 c. 8 b. 6 d. 12
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Ответ:
spot 1 can be filled 4 ways ( A, B, C or D)
spot 2 can be field 3 ways with the remaining 3 letters that were not picked for spot 1 so
4·3=12 ways
correct answer is d.12
Ответ:
B on e2020
Step-by-step explanation:
Ответ:
20
Step-by-step explanation:
4+4+4 (4*3)= 12
12+8=20