Question : If the population of a town is 12,000 and the population increases at the rate of 10% per annum, then find the population after 3 years.

Option 1: 15,972

Option 2: 12,200

Option 3: 11,200

Option 4: 10,200

Question : The population of a town increases at the rate of 20% per annum. If the town's population will be 69,120 after 2 years, then what is the town's present population?

Option 1: 48,000

Option 2: 42,000

Option 3: 40,000

Option 4: 36,000

Question : The value of a machine is 6,250. It decreases by 10% during the first year, 20% during the second year and 30% during the third year. What will be the value of the machine after 3 years?

Option 1: 2,650

Option 2: 3,050

Option 3: 3,150

Option 4: 3,510

Question : Negative feedback in amplifiers

Option 1: increases bandwidth and decreases noise

Option 2: decreases bandwidth and decreases noise

Option 3: increases bandwidth and increases noise

Option 4: decreases bandwidth and increases noise

Question : If the period increases by 5 years, then simple interest increases by Rs. 3600 on a sum of Rs. 6000. What is the annual rate of interest?

Option 1: 15 percent

Option 2: 12 percent

Option 3: 12.5 percent

Option 4: 10 percent