LCM Duel: Two NumbersVersion en ligne Solve multiple LCM challenges. par Arnab Biswas 1 What is the LCM of 6 and 8? a 12 b 24 c 16 d 48 2 What is the LCM of 12 and 18? a 72 b 12 c 18 d 36 3 LCM of 8 and 9? a 36 b 24 c 72 d 108 4 LCM of 7 and 5? a 35 b 70 c 7 d 5 5 If gcd(15,28)=1, LCM(15,28) = ? a 420 b 210 c 140 d 600 6 Which formula links LCM and GCD of a and b? a LCM(a,b) = a+b b LCM(a,b) * GCD(a,b) = a*b c GCD(a,b) = a*b d LCM(a,b) = GCD(a,b) 7 LCM of 4 and 10? a 4 b 40 c 10 d 20 8 LCM of 3 and 5? a 3 b 10 c 5 d 15 9 What is the LCM of 14 and 21? a 14 b 21 c 42 d 84 10 LCM of 18 and 20? a 60 b 90 c 180 d 360
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