Dhiraj Barman

1)Express each number as a product of its prime factors: (i) 140$$\begin{array}{r|l} 2 & 140 \\\hline 2 & 70 \\\hline 5 & 35 \\\hline 7 & 7 \\\hline & 1 \\\end{array}$$Hence,$$\mathbf 140 = 2 \times 2 \times 5 \times 7 = 2^2 \times 5 \times 7$$ (ii) 156$$\begin{array}{r|l} 2 & 156 \\\hline 2 & 78 … Read more