EASY

8th CBSE

IMPORTANT

Earn 100

What is the upper limit of a class interval whose lower limit and class mark are $65$ and $67.5$ respectively?

50% studentsanswered this correctly

Important Questions on Enrichment Activities (Based on Chapters 7–12)

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q C

What is the class mark (upto one decimal place) of a class interval whose upper limit is

105

and the class size is

15 ?

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q C

Write the cubes of prime numbers between

1

and

10

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q C

What is the smallest number after

1

that is a perfect square as well as a perfect cube?

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q C

Prove that if a number is doubled then its cube is eight times the cube of the given number.

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q D

The following table shows the weekly wages paid to workers in a factory

Weekly wages(in $₹$ )	$600 - 700$	$700 - 800$	$800 - 900$	$900 - 1000$	$1000 - 1100$	$1100 - 1200$	$1200 - 1300$	$1300 - 1400$
Number of workers	$8$	$12$	$20$	$20$	$16$	$14$	$8$	$2$

What is the class size?

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q D

The following table shows the weekly wages paid to workers in a factory:

Weekly wages(in $₹$ )	$600 - 700$	$700 - 800$	$800 - 900$	$900 - 1000$	$1000 - 1100$	$1100 - 1200$	$1200 - 1300$	$1300 - 1400$
Number of workers	$8$	$12$	$20$	$20$	$16$	$14$	$8$	$2$

What is the lower limit of the class interval with least frequency?

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q D

The following table shows the weekly wages paid to workers in a factory.

Weekly wages(in $₹$ )	$600 - 700$	$700 - 800$	$800 - 900$	$900 - 1000$	$1000 - 1100$	$1100 - 1200$	$1200 - 1300$	$1300 - 1400$
Number of workers	$8$	$12$	$20$	$20$	$16$	$14$	$8$	$2$

What is the class mark of the lowest class interval?

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 29 - Enrichment Activities (Based on Chapters 7–12)>ENRICHMENT ACTIVITIES (Based on Chapters 7-12)>Q D

The following table shows the weekly wages paid to workers in a factory.

Weekly wages(in $₹$ )	$600 - 700$	$700 - 800$	$800 - 900$	$900 - 1000$	$1000 - 1100$	$1100 - 1200$	$1200 - 1300$	$1300 - 1400$
Number of workers	$8$	$12$	$20$	$20$	$16$	$14$	$8$	$2$

Answer the following question:

How many workers are considered in all?

What is the upper limit of a class interval whose lower limit and class mark are 65 and 67.5 respectively?

Important Questions on Enrichment Activities (Based on Chapters 7–12)

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What is the upper limit of a class interval whose lower limit and class mark are $65$ and $67.5$ respectively?