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?
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
