3 15/16. ( I hope you know how to write it)
The number of permutations of the 4 different letters, taken two at a time, is given by:
Anything between the decimal and last non-zero digit
so 00025 are significant
the 0 in front is insignificant because it could be
00000.00025
zeroes after the 25 don't matter becasue it could be
0.000250000000 and it wouldn't change
the sig figs are 00025
Answer:
31
Step-by-step explanation:
it said 22 2's , so 22 + 9
and 0,1,3,4,5,6,7,8,9 is 9 numbers
