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mariarad [96]
3 years ago
6

How many 2-digit numbers can be formed from the digits 1 through 8 if each digit is only used once?

Mathematics
2 answers:
SVEN [57.7K]3 years ago
6 0

Answer:

56.

Step-by-step explanation:

That is the number of permutations of 2 from 8

= 8P2

= 8!/(8-2)!

= 8!/6!

= 8 * 7

= 56.

S_A_V [24]3 years ago
5 0

Answer:57

Step-by-step explanation:

12

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51

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56

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87

..

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Answer:

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Step-by-step explanation:

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First of all, we will find the volume of silo using volume of cone formula.

\text{Volume of cone}=\frac{1}{3}\pi r^2 h, where,

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We know that radius is half the diameter, so radius of silo would be r=\frac{3}{2}=1.5.

\text{Volume of cone}=\frac{1}{3}\pi (1.5\text{ m})^2 (8)\text{ m}

\text{Volume of cone}=\frac{1}{3}\pi\times 2.25\text{ m}^2 (8)\text{ m}

\text{Volume of cone}=\pi\times 0.75\text{ m}^2 (8)\text{ m}

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Now we will multiply total volume by $414 to find total cost.\

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