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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

mathstudent2000
2013-09-03 10:45:51

ok got it

bobbym
2013-09-03 10:44:27

It is the only answer, it was derived in 2 ways.

mathstudent2000
2013-09-03 10:38:24

ok

it means a box in which a unknown number is placed

anonimnystefy
2013-09-03 08:59:46

Yes, I agree. That is the only possibility.

bobbym
2013-09-03 07:44:33

Hi;

2)

What does \square mean?

The only solution to the problem as you have written it is:

72 x 5.11 = 367.92

anonimnystefy
2013-09-03 05:24:58

Hi


mathstudent2000
2013-09-03 03:51:04

1. How many sets of 3 primes sum to 20?

2. An old book listed that 72 turkeys were bought for $\square.\square\square each, at a total cost of $\square 67.9\square. What was the cost of each turkey, if each \square stands for a digit that was unreadable in the old book?

Note: The \square digits are not all the same.

3. A number has three distinct digits. The sum of the digits equals the product of the digits. How many three-digit numbers satisfy this condition?

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