Question

1.Keeping in mind the rules for significant digits, if we multiply 11.55 by 2.5, how many significant digits are we allowed to keep?
A. 5

B. 2

C. 3

D. 4

2. Keeping in mind the rules for rounding, significant digits, and scientific notation, what is
975.0321/0.0003?
A. 3.250107 × 10^6

B. 3.3 × 10^6

C. 3.25 × 10^6

D. 3 × 10^6

E. 325010.7

3. Keeping in mind the rules for significant dig-
its, find 0.00147 × 8.314 × 7.100?
A. 8.677 × 10^−2

B. 0.087

C. 8.68 × 10^−2

D. 8.7 × 1^02