\(\frac{1.3.5.....49}{26.27.28....50}=\frac{\left(1.3.5...49\right).\left(2.4.6...48\right)}{\left(26.27.28...50\right).\left(2.4.6...48\right)}\)
\(=\frac{\left(1.2.3...25\right).\left(26.27.28...49\right)}{\left(26.27.28...50\right)\left(2.4.6...48\right)}\)
\(=\frac{1.2.3...25}{50.2.\left(1.2.3...24\right)}\)
\(=\frac{25}{50.2}=\frac{25}{100}=\frac{1}{4}\)
Học tốt!
Có ai giúp mình được không ?
mk chưa thấy phân số này bao giờ
Nam lm đúng ko z bẹn
\(\frac{1.3.5...49}{26.27.28...50}=\(\frac{1.3.5...49}{26.27.28...50}.\(\frac{2.4.6...50}{2.4.6...50}=\(\frac{1.2.3.4...50}{1.2.3.4...50.(1.2.3..25)2^25}=\(\frac{1.2.3.4...50}{1.2.3.4...50.2^25}=\(\frac{1}{2^25}