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## #4326 2012-11-26 19:35:24

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4327 2012-11-27 16:59:42

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4443 and #4444 are correct. Superlative!

Find the roots of the quadratic equations.

#4445. x2 - 3x - 10 = 0

#4446. 2x2 + x - 6 = 0

Character is who you are when no one is looking.

## #4328 2012-11-27 18:13:47

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4329 2012-11-28 18:01:23

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4445 and #4446 are correct. Neat job!

#4447. Solve :

.

#4448. Solve :
.

Character is who you are when no one is looking.

## #4330 2012-11-28 23:24:41

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4331 2012-11-29 14:59:16

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4447 and #4448 are correct. Brilliant!

#4449. Find two consecutive positive integers, sum of whose squares is 365.

#4450. The altitude of a right triangle is 7 centimeters less than its base. If the hypotenuse is 13 centimeters, find the other two sides.

Character is who you are when no one is looking.

## #4332 2012-11-29 19:18:43

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4333 2012-11-30 17:36:00

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4449 and #4450 are perfect. Good work!

#4451. Solve : 2x2 + x - 4 = 0.

#4452. Solve :

Character is who you are when no one is looking.

## #4334 2012-11-30 20:31:24

bobbym

Online

### Re: 10 second questions

Hi ganesh;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4335 2012-12-01 17:51:18

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4451 and #4452 are correct. Excellent!

#4453. The sum of the reciprocals of Rehman's age, (in years) 3 years ago and 5 years from now is 1/3. Find his present age.

#4454. In a class test, the sum of Shefali's marks in Mathematics and English is 30. Had she got 2 marks more in Mthematics and 3 marks less in English, the product would have been 210. Find her marks in the two subjects.

Character is who you are when no one is looking.

## #4336 2012-12-01 19:20:16

bobbym

Online

### Re: 10 second questions

Hi ganesh;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4337 2012-12-02 16:43:34

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4453 and #4454 are correct. Brilliant!

#4455. The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find the two numbers.

#4456. A train travels 360 kilometers at a uniform speed. If the speed had 5 kilometers per hour more, it would have taken 1 hour less for the same journey. Find the speed of the train.

Character is who you are when no one is looking.

## #4338 2012-12-02 21:12:18

bobbym

Online

### Re: 10 second questions

Hi ganesh;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4339 2012-12-03 17:45:21

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4455 and #4456 are correct. Excellent!

#4457. Fin pd the value of k such that 2/3, k, 5/8 are the three consecutive of n Arithmetic Progression.

#4458. Find the common difference and write the next four terms of the following arithmetic progression :

-1, 1/4, 3/2, ......

Character is who you are when no one is looking.

## #4340 2012-12-03 20:18:56

bobbym

Online

### Re: 10 second questions

Hi ganesh;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4341 2012-12-04 17:35:46

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4457 and #4458 are correct. Brilliant!

Find the number of terms in the following Arithmetic Progression:

#4459. 7, 13, 19, .........., 205.

#4460. 18, 15.5, 13, ............., -47.

Character is who you are when no one is looking.

## #4342 2012-12-04 19:19:14

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4343 2012-12-05 17:10:56

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4459 and #4460 are correct. Neat work!

#4461. Find the 31st term of an Arithmetic Progression whose 11th term is 38 and the 16th term is 73.

#4462. An Arithmetic Progression consists of 50 terms of which 3rd term is 12 and the last term is 106. Find the 29th term.

Character is who you are when no one is looking.

## #4344 2012-12-05 17:32:15

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4345 2012-12-06 17:55:31

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solution #4461 is perfect. Good work!

I was unable to view the solution #4462.

#4463. The 17th term of an Arithmetic Progression exceeds its 10th term by 7. Find the common difference.

#4464. Which term of the Arithmetic Progression 3, 15, 27, 39, .... would be 132 more than its 54th term?

Character is who you are when no one is looking.

## #4346 2012-12-06 19:54:36

bobbym

Online

### Re: 10 second questions

Hi;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #4347 2012-12-07 17:39:23

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

The solutions #4463 and #4464 are correct. Marvelous!

#4465. How many three-digit numbers are divisible by 7?

#4466. How many multiples of 4 lie between 10 and 250?

Character is who you are when no one is looking.

## #4348 2012-12-08 18:17:53

ganesh
Moderator

Offline

### Re: 10 second questions

Hi bobbym,

#4467. Find the 20th term from the last term of the Arithmetic Progression : 3, 8, 13, ......, 253.

Character is who you are when no one is looking.

## #4349 2012-12-08 18:21:39

anonimnystefy
Real Member

Offline

### Re: 10 second questions

Hi ganesh

I don't get the question. What should we find?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #4350 2012-12-08 20:17:23

bobbym

Online

### Re: 10 second questions

Hi  anonimnystefy;

I think he wants the 30th term.

Hi ganesh;

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.