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#4101 2015-10-07 18:07:47

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

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#4102 2015-10-07 18:20:31

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2533 is correct! Neat job!

#2534. The sum of two numbers is 48 and their product is 432. Find the 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.

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#4103 2015-10-08 03:41:25

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4104 2015-10-08 08:41:52

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2534 is correct! Neat work!

#2535. Find the roots of the equation

.


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.

Offline

#4105 2015-10-09 03:09:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4106 2015-10-10 01:52:12

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution # 2535 is correct! Fabulous, bobbym!

#2536. Evaluate :

.


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.

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#4107 2015-10-10 06:23:27

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4108 2015-10-10 18:05:41

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2536 is correct! Neat work!

For #2537 and #2538 -

#2537. A wheel has diameter 84 centimeters. Find how many complete revolutions must it take to cover 792 meters.

#2538. A bicycle wheel makes 3000 revolutioms in moving 11 kilometers. Find the diameter of the wheel.


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.

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#4109 2015-10-14 19:13:20

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4110 2015-10-14 23:37:09

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solutions #2537 and #2538 are correct! Neat work!

#2539. Three unbiased coins are tossed together. Find the probability of getting
(i) all heads
(ii) two heads
(iii) one head
(iv) at least two heads.


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.

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#4111 2015-10-15 03:42:40

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4112 2015-10-15 10:28:29

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2539 (all four parts) is perfect! Brilliant!

#2540. If the zeroes of the polynomial

are in an Arithmetic Progression, find them.


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.

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#4113 2015-10-15 19:19:07

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4114 2015-10-15 19:58:56

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym.

The solution #2540 is perfect! Excellent!

#2541. Find 'k' so that the points P (-4,6) lies on the line segment passing A (k,10) and B (-3,8). Also, find the ratio in which P divides AB.


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.

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#4115 2015-10-16 22:34:12

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4116 2015-10-17 00:01:52

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2541 (former part) is correct! Regarding the latter part, I calculated the point B (-3,8) in lieu of (3,-8). Hence the indisrepancy.
Neat work, bobbym!

#2582. A father is three times as old as his son. After 12 years, his age will be twice as old as his son. Find their present ages.


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.

Offline

#4117 2015-10-17 17:36:20

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4118 2015-10-17 17:56:31

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2582 is correct! Well done!

#2583. The larger of two supplementary angles exceeds the smaller by 18 drgrees. Find them.


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.

Offline

#4119 2015-10-19 21:30:28

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4120 2015-10-20 00:11:14

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2583 is perfect! Neat work!

#2584. While covering a distance of 30 kilometers, Ajeet takes 2 hours more than Amit. If Ajeet doubles his speed, he would take 1 hour less than Amit. Find their speeds of walking.


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.

Offline

#4121 2015-10-20 18:22:31

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4122 2015-10-20 19:30:59

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2584 is correct! Neat work!

#2585. A boat goes 12 km upstream and 40 km downstream in 8 hours.  It can go 16 km upstream and 32 km downstream in the same time. Find the speed of the boat in still water and the speed of the stream.


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.

Offline

#4123 2015-10-23 21:53:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

#4124 2015-10-23 22:43:46

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,403

Re: Oral puzzles

Hi bobbym,

The solution #2585 is perfect! Neat work!

#2586. 4 tables and 3 chairs, together, cost $2250 and 3 tables and 4 chairs cost $1950. Find the cost of 2 chairs and 1 table.


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.

Offline

#4125 2015-10-24 19:57:47

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Oral puzzles

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.

Offline

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