Which of the following is not HCF of two number whose LCM is 145?
(a) 5
(b) 19
(c) 29
(d) none of these
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Answer:
HCF =145 ,LCM =2175
a = 725
H.C.F × LCM = a×b
145×2175 =725×b
145×2175/725 =b
b=435
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