Question

1. How many natural numbers lie between 8 and 9??
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Answer 1

Answer:

17 natural numbers lie between 8 and 9.

Step-by-step explanation:

$8^{2} = 64$

$9^{2} = 81$

The numbers in between 81 and 64 are: 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80

$81^{2} - 64^{2} = 17$

Therefore, 17 natural numbers lie between 8 and 9.

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