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HCF and LCM
HCF means Highest Common Factor: HCF of two or more numbers is the greatest number that divides each of them exactly. We are going to practice question like first simple, little bit tuff and more tuff. Tuff means the question takes more time for calculation that’s it ok. I will give some tips for quicker calculation methods also. Ex. 1 Find the HCF of 42 and 70 42 = 2x3x7 70 = 2x5x7 HCF = 2x7=14 Quicker method 70 - 42 =28 42 -28=14 28-14=14 14-14=0 HCF =14 Ex. 2 Find the HCF of 1365,1560 and 1755 1365=3x5x7x13 1560=2x2x2x3x5x13 1755=3x3x3x5x13 HCF=3x5x13=195 in this method we have to spend little bit more time Quicker method 1560-1365=195 1755-1560=195 HCF = 195 HCF of decimals Rule first make (if necessary) the same number of decimal places in all g
While quantitative research often samples large groups of people randomly, there is a lot more purpose and specificity to the selection of smaller samples for qualitative research.
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