Riddle: What is always in front of you but can't be
seen?
1. 234 000 000 000
A. 0.5 x 104
U. 2.34 x 1011
2. 123 500
T. 1.235 X 105
3. 0. 000 34
E. 3.4 x 10-4
F. 2.54 x 10-6
4. 0. 000 002 54
R. 5 x 103
5. 5 000
Letter
Item
Number
4
1
3
1
5
3


Pasagot po ng maayos pls​