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Guna says, “Any two prime numbers are co-prime?”. Is he right?

Important Questions on Prime Time

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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 57
Numbers that are divisible by 10 are those that end with ‘0’. Do you agree?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 58
Numbers that are divisible by 5 are those that end with either a ‘0’ or a ‘5’. Do you agree?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 59
Consider this statement: Numbers that are divisible by 2 are those that end with ‘0’, ‘2’, ‘4, ‘6’ or ‘8’ . Do you agree? What are all the multiples of 2 between 399 and 411?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 60
Find numbers between 330 and 340 that are divisible by 4. Also, find numbers between 1730 and 1740, and 2030 and 2040, that are divisible by 4. What do you observe?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 61
Is 8536 divisible by 4?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 62
Consider the statement: Only the last two digits matter when deciding if a given number is divisible by 4. Do you agree? Why or why not?
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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 63

Consider the statements: If the number formed by the last two digits is divisible by 4, then the original number is divisible by 4.

Do you agree? Why or why not?

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Ganita Prakash Grade 6 Mathematics Textbook>Chapter 5 - Prime Time>Q 64

Consider the statements:

If the original number is divisible by 4, then the number formed by the last two digits is divisible by 4.

Do you agree? Why or why not?