1) L×W 12×12=144
2) 12+12+12+12=48
3) L×W×H 5×5×5= 125
5) B×h/2 12×9=108/2=54
Answer:
Step-by-step explanation:
Each number has initially 10 options.
If one option used for the first number then the second number has one less, 9 options. Similarly, the third number has one less number of options than the second number, 8 options.
Total number of combinations is
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66 multiplied by 2 which should equal 142