Which one of the following statements is correct? from Mathemati

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21.

The twin premises to fix the place of Mathematics teaching in our school curriculum are

  • "how to engage the mind of every student" and "how to strengthen the student's resources"

  • "how to improve the reasoning ability of every student" and "how to enhance his spatial ability"

  • "how to raise the performance of every student in Mathematics" and "how to prepare meritorious students for international olympiads"

  • "how to make the Mathematics class more activity-oriented" and "how to enhance the procedural skills and understanding of algorithms in every student"


22.

A teacher asked the students to find the number of possible pentominoes using 5 squares and then further explore the number of possible hexaminoes and so on. These types of activities help the child to

  • improve the observation skills

  • identify relation between number pattern and shapes

  • improve spatial ability

  • improve analytical ability


23.

As per the vision statement of NCF 2005, School Mathematics does not take place in a situation, where children

  • learn to enjoy Mathematics

  • see Mathematics as a part of their daily life experience

  • pose and solve meaningful problems

  • memorise formulae and algorithms


24.

With the help of'Geogebra' software, students can learn all concepts of geometry through

  • exploratory approach

  • inquiry-based approach

  • project-based approach

  • lecture-based approach


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25.

One of the major reasons for student's failure in Mathematics at school level is that our assessment process

  • emphasizes on testing of procedural knowledge than mathematisation of abilities

  • is gender-biased and asks problems relevant to boys' interests

  • is more subjective in nature and less or no objective type of questions are included

  • gives more weightage to formative assessment than summative assessment


26.

LCM and HCF of two numbers p and q are P and Q, respectively.

If P - p = q - Q, then

  • p2 + q2 = P2 + Q2

  • p2 - P2 = q2 - Q2

  • P - Q = p - q

  • pP = qQ


27.

If 3  x  10 and 5  y  15, then minimum value of xy is 

  • 13

  • 12

  • 15

  • 10


28.

LCM of 22, 54, 135 and 198 is

  • 22 x 33 x 5 x 11

  • 23 x 32 x 5 x 11

  • 2 x 33 x 5 x 11

  • 22 x 33 x 5 x 11


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29.

Which one of the following statements is correct?

  • Sum of two prime numbers is always a prime number

  • '1' is the smallest prime number

  • A composite number can be odd

  • There is no even prime number


C.

A composite number can be odd

A composite number may be even or odd. e.g. 9 = 3 x 3, which is a composite number and also an odd number


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30.

As per NCF 2005, the goal of Mathematics teaching in school curriculum is that children learn 'Important Mathematics' Important Mathematics implies

  • understanding appropriate use of learnt mathematical techniques

  • solving mathematical games and puzzles

  • verifying geometrical theorems in Maths lab

  • knowing mathematical procedures and algorithms


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