In this blog you will find class 6 to 12, IIT, NEET MATH & PHYSICS question and answer and also some articles about Science Engineering and Technology
Showing posts with label Math Tricks. Show all posts
Showing posts with label Math Tricks. Show all posts
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15 Sept 2020
The number of scalene triangles having all sides of integral length greater than 1 and perimeter less than 13 is?
Let, A,B,C are three side of a triangle than
Condition 1 - A+B+C < 13
Condition 2 - A,B,C > 1
Condition 3. Sum of the smaller side must be greater than the largest side => A+B > C
as Perimeter is less than 13 than longer side must be less than 13/2= 6.5
Why?
A+B > C
A+B+C > 2C
C<(A+B+C)/2 < semi perimeter.
now, replacing A,B,C with (6-P), (6-Q), (6-R)
so, (6-P)+(6-Q)+(6-R) < 13
P+Q+R > 5
so solution is
1. 2,2,2
2. 2,2,3
3. 3,2,4
4. 3,3,3
5. 3,3,4
6. 3,3,5
7. 4,3,4
8. 4,3,5
9. 4,4,2
10. 4,4,4
11. 5,2,4
12. 5,2,5
there are twelve triangle,
14 Sept 2020
25 Aug 2020
26 Apr 2020
30 Jul 2019
30 May 2019
ABCD is a Parallelogram in which AP bisector angle A and BQ bisect angle B. Prove that AQ=BP , PQ= CD. ABPQ is a parallelogram, SELINA class 9 math ex 14 C question 4
ABCD is a Parallelogram in which AP bisector angle A and BQ bisect angle B.
Prove that (i)AQ=BP
(ii) PQ= CD
(iii) ABPQ is a parallelogram
SAME TYPE QUESTIONS
26 Apr 2019
What is Mathematics?
Mathematics is the science that
deals with Quantity, Arrangement, Shape-Size, Logic.
Be Aware! Math is Everywhere!
Math is all around us, in everything
we do.
Math Starts at Greek
Study of Math within early
civilizations was the building blocks of the math of the GREEKS, Who developed
Math through Geometry.
The time of day when his own shadow was same height that he was he measure the shadow of the Pyramid to get the height. It’s the starting of mathematics.
Definition of Mathematics:
6 Feb 2019
28 Aug 2018
First True Mathematician-- Thales
Thales ( 624-546 BC) was an ancient
Philosopher lived in Ancient Greece now forms a part of Turkey.
Thales regarded as the First True Mathematician , because of the
many important contributions made to the field of Mathematics, Especially in
Geometry.
Thales used geometry to calculate the distance
of a ship from the shore. He also figured out a way to measure the height of a
Pyramids.13 Jul 2018
How to do MATH step by step | How can we solve mathematics problems technically?
IT'S STEP BY STEP PROCESS YOU SHOULD
FOLLOW TO DO MATH:
ABOUT 90% OF STUDENT CONFUSED WHEN
THEY DO MATH, FOR THEM THIS ARTICLE IS BEST TO SOLVE THE MATH PROBLEMS.
FOLLOW THIS STEPS--
STEP 1- READ:- READ THE PROBLEM
READ THE MATH PROBLEM CLEARLY AND
TRY TO UNDERSTAND WHAT IS THE QUESTION TO BE ANSWERED?
REWRITE THE QUESTION IN YOUR OWN WORD.
REWRITE THE QUESTION IN YOUR OWN WORD.
STEP 2- THINK:- WHAT FACTS ARE GIVEN?
- LIST ALL FACTS.
- CIRCLE THE FACTS NEEDED TO SOLVE THE PROBLEM.
- THINK WHICH OPERATION NEEDS TO DO TO SOLVE THIS.
- CROSS OUT THE EXTRA INFORMATION.
STEP 3- SOLVE:- SOLVE THE PROBLEM
- AT FIRST DRAW A SKETCH IN YOUR MIND TO SOLVE THE
PROBLEM.
- GUESS AND CHECK.
- CREATE TABLE.
- DRAW PICTURE.
- DRAW MODEL.
- LOOK FOR A PATTERN.
- CREATE AN ORGANIZED LIST.
- CREATE A PROPORTION.
STEP 4- JUSTIFY:- JUSTIFY THE ANSWER
- WHAT DID YOU DO
- WHY DID YOU DO IT?
- WRITE THE ANSWER IN COMPLETE SENTENCE.
Remember One thing–
The Only way to Learn Mathematics is to do Mathematics — PAUL HALMOS
18 Mar 2018
How to do Math Preparation
Math is very interesting Subject. If
you unable to find interest on it, it means you have not tried to understand
it. Try to understand Math and seems its easy, clear as water and 100% logical.
There is Nothing to be assumed and nothing to be confused about. So, nothing to
worry if you come forward with firm determination to learn mathematics.
The most basic thing in Mathematics are 4 functions.
- Addition
- Subtraction
- Multiplication
- Division
All these four things are most
useful. At least one of these things is certainly used in any type of
mathematical questions. So, if we do our basic calculation faster and error
less we save our valuable time in each question.
To calculate faster here the following tips:-
- Remember the table at lease upto 20.
- Learn One-line Addition, Subtraction, Multiplication,
and Division.
- Clear the Fundamental behind each chapter.
- Use quick Formula and faster method but before that
clear the concept behind this formula and then apply.
- Try to do the same MATH in different method, and check
the answer- remember if your math is correct all methods answer will be
same. its the most attractive thing in case of MATHEMATICS.
- Lastly More and More Example - You are Suggested
to go through as many examples as possible.
Remember One thing--
The Only way to Learn Mathematics is to do Mathematics -- PAUL HALMOS
What is Mathematics?
10 Mar 2018
ZERO TO THE POWER OF ZERO
HELLO FRIENDS!!!!!!
TODAY WE TRYING TO SOLVE A
MATHEMATICAL PROBLEM RELATED TO ZERO.
WHATS IS THE VALUE OF ZERO TO THE POWER OF ZERO
Lets try--
let,
0ˆ0= x
now taking log base 10 in both
side
log 0ˆ0= log x
or, 0 log 0= log x
or, 0 = log x
or, log x = 0
here the base of log is 10,
therefore,
x= 10ˆ0 [ withdrawal
log]
or, x= 1 [proved]
so friends here we get the
mathematical value of zero to the power zero is equals to one.
IF YOU ENJOY THIS PLEASE SHARE, IF
YOU HAVE ANY SUGGESTION AND QUESTION PLEASE WRITE ON THE COMMENT BOX.
THANK
YOU
9 Mar 2018
Factorial Zero 0!
HELLO FRIENDS!!!!
O (ZERO) IS THE MOST CRITICAL NUMBER OF THE WORLD.
LETS START....
WE KNOW FACTORIAL n ( n! ) = n x
(n-1) x (n-2) x (n-3) x .......x (n-(n-1))
n! = n x (n-1) x (n-2) x (n-3)
x .......x 1 --------------(a)
(n-1)!= (n-1) x (n-2) x (n-3) x
.......x 1 ---------------(b)
as same- 5!= 5 x 4 x 3 x 2 x 1= 120
6!= 6 x 5 x 4 x 3 x 2 x 1= 720
4!= 4 x 3 x 2 x 1= 24
here we can get an equation by
divide equation (a) and (b) that,
n!
/ (n-1)! = n
n!
/ n = (n-1)!
so, in the position of n put 1, we
get,
1! / 1 = (1-1)!
(1-1)!= 1! / 1
or, 0!= 1/1 [ as
1!= 1]
or, 0!= 1
Wao, here we get the mathematical
value of factorial zero is equals to one. wish you enjoy this.
IF YOU ENJOY THIS PLEASE SHARE, IF
YOU HAVE ANY SUGGESTION AND QUESTION PLEASE WRITE ON THE COMMENT BOX
THANK
YOU
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