Wednesday, April 11, 2012

Solve it - Question no. 18

Dear All,

I am posting a problem after a long time. Try this out and post your answer in the comment section.

QUESTION:
A mother has four children, each with a di erent age. The product of their ages is 17 280. The sum of the ages of the three oldest children is 40 and the sum of the ages of the three youngest children is 32. Determine the ages of the four children.

All the best!

Monday, April 2, 2012

Making Mathematics Simpler! NCERT class XII Solutions

Dear Students Of Class XII
It is observed that many a times, after teachers have explained certain topics and have discussed certain questions from the related exercise, not all the questions of the exercise are being solved/attempted by the students. It is practically impossible and undesirable for the teacher to solve each and every question in the class itself. The remaining questions are supposed to be attempted by the student at home. However, it is very much possible that the student is unable to successfully solve all of them.
After discussing this issue with the students, I have decided to make the NCERT textbook solutions available at my blog. The solutions are taken from www.meritnation.com. You can directly visit this website but you will first need to register there and the solution of only one question can be seen at a time. This might be a cumbersome process while you are checking your answers. Therefore, to  save the student’s time and to make those solutions available to all the unregistered students as well, I have decided to upload the solutions here from time to time.
At the same time, I would want that the students do not check the solutions before they have tried the questions themselves. Hence, I’ll be uploading the solutions here only after the exercise has been covered in the class.
Note: Check this post frequently to get the latest updates and keep doing mathematics!

CHAPTER 1 (RELATIONS AND FUNCTIONS)

CHAPTER 2 (INVERSE TRIGONOMETRY)

CHAPTER 3 (MATRICES)

CHAPTER 4 (DETERMINANTS)

EX. 4.1     EX.4.2       EX. 4.3      EX. 4.4
MISC. EX.

CHAPTER 5 (CONTINUITY AND DIFFERENTIABILITY)
EX 5.1        EX 5.2      EX. 5.3      EX. 5.4      EX. 5.5

Happy learning...
All the best...
Amit Sir

NUMBER OF TRAILING ZEROES IN A PRODUCT (PART -2)

Dear all, Please do watch my latest video (dated 10-01-2021) on the topic “NUMBER OF TRAILING ZEROES IN A PRODUCT (PART -2)” VIDEO LINK HERE...