MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 4

MEDIUM

6th CBSE

IMPORTANT

Earn 100

Write all the multiples of:

$5$ between $30$ and $50$

50% studentsanswered this correctly

Important Questions on HCF and LCM

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 4

Write the total number of multiples of $17$ between $40$ and $90$ .(Mention the answer in numeral form)

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 5

Can the product of two prime numbers be prime? If yes, then give an example.

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 6

Are

27

and

72

co-primes? Why?

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 7

Write all the prime numbers between

65

and

90

.

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 8

How many even prime numbers are there in the set of natural numbers. List them?

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 9

Write all the pairs of twin primes less than

20

. Also find whether

49

and

51

are twin primes or not.

MEDIUM

6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 10

Write five pairs of co-prime numbers.

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6th CBSE

IMPORTANT

MathSpark A course in mathematics Book 6>Chapter 3 - HCF and LCM>Exercise>Q 11

Write the number of multiples of

23

between

80

and

180

.