Answer:
5×1,000,000,000
Explanation:
You multiply all of them and whichever gives you the the same number as 5,000,000,000 is the right one which so happens to be 5×1,000,000,000
The second answer is correct (5 x 1,000,000,000)
Just count the number of zeros. Multiplying a number liket his by five doesn't change the number of zeros
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