Answer:
9^4
Step-by-step explanation:
There is 4 nines.
9*9*9*9 = 6561
9^4 = 6561
9^3 = 729
No, because 7 x 21 is 147.
Answer:
40 minutes
2/3 hours
0.667 hour
2,400 seconds
Step-by-step explanation:
New Delhi
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Is the anser
Answer:
81
Step-by-step explanation:
93-12=81