Title: random choice of random
Course: Phil's test course

Q: This is a Variable numeric question

Evaluate the following. You should give your answer in scientific notation and to one significant figure. You may choose to do the calculation with or without a calculator.

Keyboard users may use ↑ (the up arrow key) to enter superscript mode and ↓ (the down arrow key) to return to normal.

$$ \frac{\sqrt{[[a]] \times 10^{[[c]]}}}{[[b]] \times 10^{-[[d]]} \times 10^5} $$ = ______
- 1.0e9 (Your answer is correct.)
- b (Look carefully at the positioning of the square root sign.)
- * (Your answer is incorrect.)
A: 1.0e9
Feedback: $$ \frac{\sqrt{[[a]] \times 10^{[[c]]}}}{[[b]] \times 10^{-[[d]]} \times 10^5} $$ | = $$ \frac{[[b]] \times 10^{[[ee]]}}{[[b]] \times 10^{-[[d]] + 5}} $$ | = $$ \frac{1 \times 10^{[[ee]]}}{10^{[[f]]}} $$ | = $$1 \times 10^9 $$
  Hint: Hint 1.
  Hint: Hint 2.

Q: What is [[a]] - [[b]]? _____
- c (Your answer is correct.)
- * (Your answer in incorrect.)
A: c
Feedback: [[a]]-[[b]]=[[c]]
  Hint: Hint 1.
  Hint: Hint 2.