Sequences and Series
Find the two numbers whose A.M. is 25 and GM is 20.
The Fibonacci sequence is defined by 1=a1=a2 and an=an−1+an−2,n>2. Find anan+1,for n = 1, 2, 3, 4, 5.
In a factory, 150 workers were engaged to finish a piece of work in a certain number of days. However, if 4 workers are dropped everyday, except the first day, it will take 8 more days to finish the work. Find the number of days in which the work was to be completed.
The number of bacteria in a certain culture doubles every hour. If there were 60 bacteria present in the culture originally, how many bacteria will be present at the end of 2nd hour, 4th hour and nth hour?
The income of a person is Rs. 3, 00,000, m the first year and he receives an increase of Rs. 10.000 to his income per year for the next 19 years. Find the total amount, he received m 20 years.