Book Maths Puzzle Numerical Ability

n=[(1/s)+1]
and s=10
compute n

Read Solution (Total 2)

[(1/10)+1]^10 =[(11^10)/(10^10)] =2.5937424601
9 years agoHelpfull: Yes(1) No(0)

ans) The value of n=1
9 years agoHelpfull: Yes(0) No(1)

Book Other Question

The lcm of two numbers is 39780 and their ratio is 13:15 then find the numbers prof raju is a very interesting person. i met him and started discussing human hair.
prof raju told that there are about 150000 airs on an average mans head. i disagreed with him.
i told him that no one could have actually come by this figure - who would have patience to actually take a man's head and take the hair and count them!

'no' he argued ' it is enough to count them on one square centimeter of a man's head and knowing this and the size of the hair covered surface , one can easily calculate the total number of hairs on a man's head'

then he popped a question at me.it has also been calculated that a man sheds about 3000 hairs a month. can you tell me the average longevity of each hair on a man's head?

can you guess what the answer is??