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Combination lock |
2019-07-31 |
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From Antony:
Hello.
So my 3yr old daughter has had a bit of a play with the 3 dial combination lock on my backpack and locked it closed.
I am looking for all the possible combinations to go through a process of elimination to find the combination she has set.
To be clear. There are three dials, each with the numbers 0-9. I have read 10x10x10=1000 options but not sure if that is correct .. feels too small?
Many thanks in advance.
Answered by Penny Nom. |
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Six digit numbers from 4 digits |
2019-07-30 |
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From Tab:
How many six digit combinations can be made from the numbers zero, two, five, eight? With repetition of numbers
Answered by Penny Nom. |
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The volume of a well |
2019-07-30 |
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From Jordan:
How much water could my well hold if the depth of the well is 30 feet
feet and the diameter of the well is 24 feet ?
Answered by Penny Nom. |
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A problem involving ratios |
2019-07-24 |
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From Dhanendra:
A plot reserved for playground in the ratio of length and breath 11:4 gram panchayt spends rupees 45000 for boundary at the rate of 100 per m. Find the dimensions of the plot.
Answered by Penny Nom. |
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Packing chocolates in boxes |
2019-07-22 |
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From CHESKA:
1.levy can pack the chocolate bars either with 35 bars in a box,with 42 in a box, or with 49 in a box. what is the least number of chocolate bars that he has?
2. the blue light of a Christmas light blinks every 2 second. the red light blinks every 3 second and the yellow light blinks every 5 second. how many times will the three lights blink at the same tims in one hour?
3.a wooden straightedge can exactly measure an 825 cm rope, a675 cm rope, and 375 cm rope. what is the least possible length of the straightedge? how many times will it measure each rope?
Answered by Penny Nom. |
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Listing three digit combinations |
2019-07-17 |
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From Larry:
Using numbers 0-9, what are all the possible combinations of choosing 3 numbers regardless of order and no 3 numbers being used more than 2 times in the combination. So no 1,1,1, 2,2,2, 3,3,3 etc. Order does not matter. Could you please send me a listing of all those combinations?
Answered by Penny Nom. |
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Three digit codes |
2019-07-14 |
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From Jessica:
I need to find the total number of 3 digit codes using the digits 1 through 9. How many of these codes would be odd numbers, and how many even?
Answered by Penny Nom. |
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The maximum volume of a cone |
2019-07-14 |
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From A student:
find the maximum volume of a cone if the sum of it height and volume is 10 cm.
Answered by Penny Nom. |
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A three digit code |
2019-07-14 |
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From Hannah:
I have a briefcase with a three-digit code. I can set the code myself using digits 1 through 9, assuming that each digit can only be used once. How many possible codes are there?
Answered by Penny Nom. |
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Volume of a spherical cap |
2019-07-12 |
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From Shanto:
In a jar of water, we kept a sphere with radius r. Then 75% of its volume went under water. Find out the distance of the top of the sphere from the surface of the water.
Answered by Penny Nom. |
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Price per square meter to price per square inch |
2019-07-09 |
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From Al:
If something costs $2.5 square meter, how much would it cost in square inches? How do i convert costs per square inch, into square meters?
Answered by Harley Weston. |
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Order of operations |
2019-07-06 |
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From Carri:
What is the answer (( 5 ื 12) / 3 ) + 30 - 50
Answered by Penny Nom. |
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Distance traveled |
2019-07-03 |
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From J:
If a fly flies at 15 feet per a second between two walls closing in upon themselves. Wall A is moving to the right at 3 feet a second and wall B is moving to the left at 15 feet a minute, how far will the fly fly before the walls touch?
Answered by Penny Nom. |
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Forty foot and 9 spacers |
2019-06-28 |
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From Christopher:
Ok I've got forty foot and 9 spacers one each end and 7 between what is the distance between the seven in the middle
Answered by Penny Nom. |
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One part in 10^x |
2019-06-26 |
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From Jim:
What is the meaning of the phrase one part in 10x where the x is an exponent? I have seen these examples: ...better than one part in 10x and ...to within one part in 10x.
Answered by Penny Nom. |
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