The population of the Earth at the end of 2018 was approximately 7.7 × 10⁹ people. Which of the following is the correct way of representing this number? A) 7,700,000,000 people B) 77,000,000,000 people C) 77,000,000,000,000 people D) none of these

Question

Quizplus · Accepted Answer

The number given is 7.7 × 10^7, which means 7.7 multiplied by 10 seven times (since the exponent is positive). When we multiply 7.7 by 10 seven times, we get 77,000,000,000. However, we do not add any extra zeros as that would result in a different number. Therefore, the correct way of representing this number is option A, which shows 7,700,000,000 people.

The Population of the Earth at the End of 2018