Math Is Fun Forum

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh

Last edited by phrontister (2011-12-10 10:16:32)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi phrontister and bobbym,

The solutions #3448 and #3449 are correct. Tremendous performance!

#3450.

#3451. The Least Common Multiple of two numbers is 495 and their Greatest Common Divisor is 5. If the sum of the numbers is 100, then what is their difference?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi phrontister and bobbym,

The solutions #3450 and #3451 are correct. Brilliant!

#3452.

#3453. A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solution #3452 is correct. Good work!

Please solve #3453 (just added).

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym and phrontister,

The solutions #3452 and #3453 are correct. Marvelous!

#3454. A six-digit number is formed by repeating a three digit number; for example 256,256 or 678,678 etc. (In general, xyzxyz or abcabc). Any number of this form is divisible by which numbers?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi phrontister and bobbym,

The solution #3454 is perfect. Outstanding! (phrontister : The only factor you missed is 143).

#3455. Which of the following is the biggest?

#3456. The difference between the simple interest received from two sources on $1500 for 3 years is $13.50. What is the difference between their rates of interest?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym and phrontister,

The solution #3455 is correct. Excellent. bobbym and phrontister!

The

#3457. In an election contested by two candidates, the winner gets 60% of the votes and wins by 24 votes. Find the total number of votes  polled in the election.

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

With #3456 I treated the interest as applying to the total period instead of annually, which is why my answer is three times yours. It didn't occur to me to treat it the usual annual way.

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: 10 second questions

hi ganesh

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“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym, phrontister, and anonimnystefy,

The solution #3457 is correct. Excellent!

#3458. In an examination of 80 students 48 passed in English, 40 passed in Bengali and 16 failed in both. What is the number of students who passed in both English and Bengali?

#3459. The length and breadth of a rectangular garden are 15 meters and 10 meters respectively.What is the cost of paving a width 1 meter around inside the garden at the rate of $5 per square meter?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: 10 second questions

Hi ganesh,

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym and phrontister,

The solution #3458 is correct, bobbym! Good work! The solutions #3458 and #3459 are correct, phrontister! Excellent!

#3460. Find the least possible number that leaves the same remainder 7 when divided by 36, 48, and 72.

#3461. What is the value of 0.1 x 0.1 + 0.01 x 0.01 + 0.001 x 0.001?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.