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Interesting question on Circle : Pls help

For a positive integer n, let $$P_n$$ denote the product of the digits of n, and $$S_n$$ denote the sum of the digits of n. The number of integers between 10 and 1000 for which $$P_n$$ + $$S_n$$ = n is

How do I go about solving questions based on routes and networks?

how do i solve RC?

There are two qualities of milk - Amul and Sudha having different prices per litre, their volumes being 130 litres and 180 litres respectively. After equal amounts of milk was removed from both, the milk removed from Amul was added to Sudha and viseversa. The resulting two types of milk now have the same price. Find the amount of milk drawn out from each type of milk.?

Can anyone please help, as to which course to apply for in XAT 2016 form. I have just completed my graduation in 2015 and have started a job now.The options are:

1) Business Management
2) Human Resource Management
3) General Management Programme
4) Global Business Management

Can anyone please explain the differences between this program.
Thanks :)

I am an engineering student studying in final year, category: general, gender : male , work experience = 0 . What score do i need in NMAT out of 360 to get in NMIMS Mumbai. different Websites are providing different information which only adds to my confusion. As of now, I get about 75 questions right out of 120 in the alloted time. Is it enough ?

ABCD is a trapezium in which AB is parallel to CD, AB = 12 cm and CD = 24 cm. If O is the point of intersection of AC and BD, find the ratio of the area of triangle AOD to that of triangle COD.

Find the coefficient of $$x^5y^3z^{13}$$ in $$(2x+3y-z)^{21}$$

Daschat 12. In the DI+LR section, Q47-50, in the solution, everywhere it is mentioned, according to the table, but the table is not provided in the solution. Please explain this solution