Questions

Here in the given puzzle,

2 x (2 + 2) = 8

3 x (3 + 3) = 18

4 x (4 + 4) = 32

5 x (5 + 5) = 50

Similarly,

6 x (6 + 6) = 72.

Just-in-time,or lean manufacturing, is a production management philosophy built around the continuous reduction of waste. It is suited for businesses where production efficiency is key. Anything that interferes with productivity is waste and,therefore, the enemy under JIT systems. Techniques that support JIT philosophy include reducing inbound inventory by creating supplier delivery schedules, minimizing outbound stock with customer delivery schedules and constant work in-house reducing scrap material and wasted man-hours. These techniques improve cash flow and maximize sales margins.

In 1814, George Stephenson developed steam engine to haul coal from mines to ports by railways. In 1830, the first railway train began to carry passengers and freight from Liverpool to Manchester.

Contour bunding is a proven sustainable land management practice for mountainous areas, marginal, sloping, and hilly land where the soil productivity is very low.

It is widely adopted by the ethnic minorities of Nepal who practice the shifting cultivation system of farming.