unable to solve this question
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question no 25 unable to understand in e book solution
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quants
If f(x + 1) = x(-1)+1 - 2 f(x) for x โ N and f(1) = f(1986). Calculate the value of f(1) + f(2) + f(3)++f(1985).
unable to understand
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not able to understand solution of e book
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how can i connect with my mentor?
my mentor is anukool srivastava sir
if possible please explain this question in krishna bajoria's sir method
a bullet train leaves ahemdabad at 5 am and reaches mumbai at 9 am another train leaves mumbai at 7am and reaches ahemdabad at 10:30am after how much time do they cross each other after 7 am?
solution of this question is not clear in e-book
Akshay decides to write a book consisting of 270 pages. Every day, he writes it in such a way that he increases his efficiency each day by writing 5 more pages than the number of pages he wrote on the day before. He starts by writing 10 pages on the first day. How many days would he take to complete the book?
not able to understand
Either Pipe A or Pipe B can fill a tank in 5 days. Pipe A fills the tank such that every day it doubles the amount it fills on the previous day. Pipe B, on the other hand, fills the tank in such a way that it increases the amount of water filled per day in an Arithmetic progression. On day 5, Pipe B can fill 90% of the amount that Pipe A fills on day 5. On first day both of the pipes fill the same quantity of water. How much percentage of tank can be filled by Pipe A by day 3?
not understanding given solution in e book
A dairy man pays Rs.6.40 per liter of milk. He adds water and sells the mixture at Rs.8 per liter thereby making 37.5% profit. Find the ratio of the water to milk received by the customers?