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sveticcg [70]
3 years ago
12

How many numbers less than 1000 are there that use only the digits of 2088?

Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

  17 numbers with any number of digits

  12 numbers using as many digits as possible

Step-by-step explanation:

It depends on how many digits you are required to use. If you're not required to use more than one digit, then the possible numbers are ...

  0, 2, 8, 20, 28, 80, 82, 88,

  208, 280, 288, 802, 808, 820, 828, 880, 882

for a total of 17 numbers.

__

If you must use the maximum possible number of digits, then the 1-digit numbers and the 2-digit numbers containing 0 must be taken off the list, leaving ...

  028, 082, 088, (and all the above 3-digit numbers)

for a total of 12 numbers.

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Answer is B. 4,096

I encountered this problem before. This is a trick question.
84 is not really the number 84. It is 8 raised to the 4th power.

So 8⁴ is equal to 4,096.

8 x 8 x 8 x 8 = 4,096

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Diane is 25 years older than her son Craig. The sum of their ages is 105. How old are Diane and Craig?
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Answer:

Let Craigs age = x

Therefore Dianes age = 25 + x ( since she's 25 years older)

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x = 40

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Dianes age is 65 years old.

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