The 200 tickets of a lottery were sold in which there was prize on 10 tickets. If Monica has purchased one ticket, what is the probability of winning a prize?

• 0.0005

• 0.05

• 0.005

• $\frac{199}{200}$

Characteristics of a good textbook of Mathematics should be

• there are many solved examples and some questions of exercise

• there are sufficient solved illustrations and more questions of exercise

• all the exercise questions are solved

• All of the above

Mathematics is the mirror of civilization is said by

• Locke

• Plato

• Hogben

• Dalton

Algebra is introduced in the middle classes. According to Piagets' theory of cognitive development, it is appropriate to introduce algebra at this stage as

• the child is at sensorimotor stage and can understand with the help of lots of manipulatives

• the child is at pre-operational stage and can understand abstract concepts

• the child is at concrete-operational stage and he can understand and conceptualize concrete experiences by creating logical structure

• the child is at formal operational stage and is fully mature to grasp the abstract concepts

25.

Following is a problem from textbook of Class VI

Express the following statement through linear expression
Neha has 7 more toffees than Megha. If Megha has x toffees, how many toffees does Neha have?

Which competence of Bloom's cognitive domain is referred in the above question?

• Knowledge

• Comprehension

• Analysis

• Synthesis

If p=3²⁰⁰⁰ + 3^-2000 and q = 3²⁰⁰⁰- 3^-2000 , then the value of p²-q² is 

• 1

• 2

• 3

• 4

To establish which type of correlation a mathematics teacher must have, versatile knowledge of basic elements of different subjects?

• Incidental correlation

• Systematic correlation

• Both (1) and (2)

• None of these

Read the approaches used by the two teachers to teach solving oflinear equation, say 2x - 6 = 10

Teacher A	Teacher B
Steps (a)Take 6 on other (b) Change the sign of 6 and add to 10 (c) Get 2x = 16 (d)Take 2 on the other side and divide (e) Get x = 8	Steps (i) Equation always mentain equality. So, same operation with same number can be performed on both sides to maintain equality (ii) HENCE, 2X - 6 + 6 = 10 + 6 = 2X = 16 (iii) $\frac{2\mathrm{x}}{2} = \frac{16}{2} \Rightarrow \mathrm{x} = 8$

It can be observed that

• teacher A focuses on conceptual knowledge while teacher B focuses on procedural knowledge

• teachers A and B focus on instrumental
  understanding

• teacher A emphasizes on instrumental understanding while teacher B emphasizes on
  relational understanding

• teacher A emphasizes on relational understanding while teacher B emphasizes on instrumental understanding

Writing proofs in geometry implies

• argument or justification of statements

• description of a geometrical problem

• steps of drawing a figure

• two-column table of axioms and deductions