Make the target
number 17
with these
numbers
2 6
5 4 8 1
Make
the target number with
the help of
addition and subtraction but use each number
one time
only

on friday there were 15 birds

based on context clues you gave i'm assuming the answer would be c.

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement