13What are the radii??
Q. Find the first non-zero digit from the right when 25 ! is written in base 5 notation.
Q. There are 3 circular coins each with different radii … They are placed touching each other externally. The distance from the centre to each circle is 1, √3 and 2 units.
Find the area of the gap included between the 3 coins.
{ i didn't understand this "distance from centre to each circle" part [7] }
Also, what is a decent score for CMI out of 100 ??? ... anybody else gave it?
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10 Answers
11Q2
the answer "distance from center to each circle" is that all the three circles which are touching externally have the distance from their respective centers as 1,√3,2.
I suggest u to take some specific circles .
The appropriate fig will be
U can observe that we have a right triangle.
aage area kaise nikaal na hai[12][12][12]
13what ans did u get? 4 d second one...i m getting a bad looking ans....
9Q1
25! is divisible by 56 and not by 57
its of form 56( a +5b ) we need to find a
a = (25!/56)% 5
9write
12 as 10 +2
13 as 10+3
24 as 20+4 so on in frm 5β + α
so 25!/56 mod 5 = (4.3.2.1)5 mod 5 =(25-1)5mod5 = 4