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find the least number, which is divisibl...

find the least number, which is divisible by 8 and 9. Let’s find LCM of 8 and 9.

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JNAN PUBLICATION-Revision of Previous Lessons-EXAMPLE
  1. find HCF of 25, 35 and 60 by the method of Division.

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  2. find LCM of 12, 18 and 24 by finding their prime factors.

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  3. find the least number, which is divisible by 8 and 9. Let’s find LCM o...

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  4. At 5 in the morning, 3 cocks crowed together. The first cock crows aft...

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  5. find the prime factors of 36, 30, 48 and then find their L.C.M.

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  6. The L.C.M of 36, 30 and 48

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  7. find mentally 6 multiples of 5 which do not contain ‘0’.

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  8. find mentally find 3 multiples of 7 which are greater than 50 .

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  9. find mentally think and find 2 digit numbers which are multiples of 4.

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  10. find mentally three numbers which are the factors of 4 .

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  11. find mentally find two numbers whose L.C.M. is 12 and their sum is 10...

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  12. What are the prime factors of 14.

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  13. What is the least prime number?

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  14. Which number is neither prime nor composite?

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  15. 42 is multiple of which of the following numbers-

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  16. Which of the following numbers has 11 as a factor

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  17. take another number 12. let us find out from table , which number have...

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  18. let us find which number have 2 as one of their multiples.

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  19. find which number have 6 as their multiples and mark it red.

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  20. Which of the following pairs of numbers are mutually prime— 5, 7

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