The number of bacteria in a certain culture doubles every hour. If there are 30 bacteria present in the culture originally, how many bacteria will be present at the end of the `2nd` hour, `4^ (th) ` hour and `n^ (th) ` hour?

The number of bacteria in a certain culture doubles every hour.If there were 30 bacteria present in the culture originally, how many bacteria will be present at the end of 2^(nd) hour, 4^(th) hour and n^(th) hour ?

How many electrons will be present in the sub- shells having m_s value of (-1/2) for n=4?

An investment firm claims that you can double your money every year if you invest with them. Suppose you invest Rs. 100 How much money would you have at the end of n^(th) year?

In a culture , the bacteria count is 1,00,000. The number is increased by 10% in 2 hours. In how many hours will the count reach 2,00,000. If the rate of growth of bacteria is proportional to the number present ?

(Manufacturing problem) A manufacturer has three machines I , II and III installed in his factory. Machines I and II are capable of being operated for at most 12 hours where as machine III must be operated for atleast 5 hours a day. She produces only two items M and N each requiring the use of all the three machines. The number of hours required for producing 1 unit of each of M and N on the three machines are given in the following table: She makes a profit of Rs 600 and Rs 400 on items M and N respectively. How many of each item should she produce so as to maximise her profit assuming that she can swll all the items that she produced ? What will be the maximum profit ?

A student builds square pattern with square bricks using the following sequence of steps. The number of bricks used in the Ist stage is 1,the number of additional bricks used in the 2nd stage is 3, the number of additional bricks used in the 3rd stage is 5 and son on .How many additional bricks does the student use in the 5th stage ?