..:: The Global Classroom Pvt. Ltd. ::..

Quick Links :

Welcome to The Global Classroom Pvt. Ltd.

When Every Child Matters!

The Global Classroom carries the unique GEMS “Dynamic” materials and assessments of Dr Sunita Gandhi, Ph.D. Cambridge University, UK. These have been tested and tried in three countries, Iceland, India and the UK, and perfected with a three year trial with over 40,000 children in India participating.

click for more...

Covering Chapters
1.	Determinants	32.	Odds in favour and odds against an event
2.	Matrices	33.	Combined Problem of Addition & Multiplication Theorem of Probability
3.	Condition for a 2nd degree equation to represent a pair of Straight lines	34.	P (at least one of them occurs) = 1-P (none of them occurs)
4.	Angle between the pair of Straight Lines	35.	Modulus and Amplitude of Complex Numbers
5.	Equation of Angle Bisector	36.	Basic Properties of Complex Numbers
6.	Finding equation of Straight Lines separately from the given equation of a pair of Straight Lines	37.	Maximum and minimum values of \|z\|
7.	Equation of a Line passing through the point of intersection of two given lines, satisfying certain conditions	38.	Square root of Complex Numbers
8.	Equation of a pair of lines parallel to the given equation of pair of Straight Lines	39.	Cube root of unity
9.	PS = e PM	40.	De Moivre's Theorem
10.	The vertex and focus of the Parabola	41.	Locus of Complex Numbers – Straight Line
11.	Equation of Parabola	42.	Locus of Complex Numbers – Circle
12.	Parabola – Locus	43.	Geometry of Complex Numbers
13.	Eccentricity of the Ellipse	44.	Differential Equations in which the variables are separable
14.	Equation of Ellipse	45.	Differential Equations
15.	Hyperbola	46.	Linear Differential Equations
16.	Solution of Inverse Trigonometric Equations	47.	Plane
17.	Proving L.H.S. = R.H.S.	48.	Sphere
18.	Domain and Range	49.	Scalar (dot) product of two Vectors
19.	Differential Calculus – Simple Differentiation	50.	Cross product of two Vectors
20.	Applications of Differential Calculus; Mean Value Theorem	51.	Triple Products
21.	Maxima and Minima	52.	Index Numbers
22.	Integral Calculus - Simple and Definite Integration	53.	Statistics – Moving Averages
23.	Area and volume	54.	Discount
24.	Measures of Dispersion	55.	Bills of Exchange
25.	Karl Pearsons Coefficient	56.	Depreciation
26.	Spearman's Coefficient of Rank Correlation	57.	Average due date
27.	Kendall's Rank Correlation	58.	Annuities
28.	Lines of Regression	59.	Application of Calculus in commerce and Economics
29.	Simple Definition	60.	Baye's Theorem
30.	Conditional Probability	61.	Binomial Distribution
31.	P (A È B) = P (A) + P (B) – P (A Ç B)

Questions

Questions 12 (b)

The number of traffic offences committed in a certain city over a period of 3 years is given in the following table :

	Jan - March	April - June	July - Sept	Oct - Dec
1968	74	56	48	69
1969	83	52	49	81
1970	94	60	48	79

Calculate the four quarterly moving averages & plot them on the graph.

Questions 13 (a)

A dealer buys an old scooter listed at Rs 2600 and gets successive discounts of 5% and 10%. He spends some amount on its repairs and sells it for Rs 2750, thereby gaining 10%. Find the amount spent by dealer on repairs

Questions 13 (b)

A bill of exchange for Rs 12,500 was payable 120 days after sight. The bill was accepted on 2nd February 1992 and was discounted on 20th February 1992 at 12%. Find the discounted value of the bill.

Solutions Tips and Guidelines

Solution : (C)

Formulae/Tips :

(i)	Discount on Marked price (M.P.)
(ii)
(iii)	Discount = M.P. - S.P.
(iv)	Read the question carefully.
(v)	Discount is always calcu lated on marked price (or list price).

•	The MAXIM Classbook

•	GEMS Dynamic Assessments

•	PerBooks Personalised TopicBooks

•	Sure Success Series

•	TargetPLUS On-Line Mocks

•	UK GCSE Mock Papers for Mathematics

•	GEMS “Dynamic” at a Glance

•	Philosophy Behind GEMS “Dynamic”

•	GEMS “Dynamic” Surveys and Perbooks

•	GEMS “Dynamic” Reports

•	GEMS “Dynamic” Training

•	GEMS “Dynamic” Lab School?