17.
16. 25+, 1508, 1972
Show that the following pairs are co-primes
19. 59.97
20. 161. 192
22. 512.945
23. 385. 621
Hint. Two numbers are co-primes if their HCF is 1.
25. Find the greatest number which divides 615
26. Find the greatest number which divides
respectively.
27. Find the greatest number that will divide
respectively
28. Reduce each of the following fractions to th
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