The worldwide population of sheep (2024) is about 10⁹, and that of goats is also about the same. What is the total population of sheep and goats?

E and F — The total population is 10⁹ + 10⁹ = 2 × 10⁹. Note that 20⁹ is not equal to 2 × 10⁹ (they are very different). 10¹⁰ = 10 × 10⁹, which is 5 times larger than the correct answer. 10¹⁸ is vastly larger. Both options (v) 2 × 10⁹ and (vi) 10⁹ + 10⁹ correctly represent the total.

The worldwide population of sheep (2024) is about 10⁹, and that of…

Question 11 of 28beginner🔧 ApplyShort Answer2 marks

The worldwide population of sheep (2024) is about $10^9$ , and that of goats is also about the same. What is the total population of sheep and goats?

(A)

$20^9$

(B)

$10^{11}$

(C)

$10^{10}$

(D)

$10^{18}$

(E)

$2 \times 10^9$

(F)

$10^9 + 10^9$

Explanation

The total population is $10^9 + 10^9 = 2 \times 10^9$ . Note that $20^9$ is not equal to $2 \times 10^9$ (they are very different). $10^{10} = 10 \times 10^9$ , which is 5 times larger than the correct answer. $10^{18}$ is vastly larger. Both options (v) $2 \times 10^9$ and (vi) $10^9 + 10^9$ correctly represent the total.

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