@lopagargg
a) CBEDA...??..
@shashankg13 said:theek haipar cr-9 messi-10
But aaj to Cristiano was named Man Of The Match.............


can't post in any of the threads 
test post!!
for anyone whoz awake....
What is the HCF of (2^120-1) and (2^100-1)
Options a) 2^100-1 b)2^20-1 c)1 d)None of these.....
@lopagargg said:A. To house this event a huge temporary exhibition hall (Joseph Paxton's steel and glass 'Crystal Palace') was built on Hyde Park in central London.B. Although the birth of dinosaurs was relatively inauspicious (first appearing as an afterthought in the published report of the 11th meeting of the British Association for the Advancement of Science), they were soon to become the centre of worldwide attention.(a) CBEDA (b) BDACE (c) BDAEC (d) ECBDA
Option (a) CBEDA.
@lopagargg said:A. To house this event a huge temporary exhibition hall (Joseph Paxton's steel and glass 'Crystal Palace') was built on Hyde Park in central London.B. Although the birth of dinosaurs was relatively inauspicious (first appearing as an afterthought in the published report of the 11th meeting of the British Association for the Advancement of Science), they were soon to become the centre of worldwide(a) CBEDA (b) BDACE (c) BDAEC (d) ECBDA
Option (a) CBEDA.
@AdityaJJ said:for anyone whoz awake....What is the HCF of (2^120-1) and (2^100-1)Options a) 2^100-1 b)2^20-1 c)1 d)None of these.....
Should be 2^20 - 1
2^120-1 = (2^20)^6 - 1
2^100 - 1 = (2^20)^5 - 1
@Angadbir said:Should be 2^20 - 12^120-1 = (2^20)^6 - 12^100 - 1 = (2^20)^5 - 1
can u explain a lil more plz :(
@Angadbir said:Should be 2^20 - 12^120-1 = (2^20)^6 - 12^100 - 1 = (2^20)^5 - 1
What does that prove? :s
@Brooklyn said:can u explain a lil more plz
Phone pe hun isliye sham maardiya.
(a^6-1) is divisible by a-1 and so is (a^5-1)
Here a= 2^20
2^20 because hcf(120,100) = 20
@Brooklyn said:can u explain a lil more plz
@ankita14 said:What does that prove? :s
a^n-b^n is div by a-b..so 2^20-1 is the HCF:wow:wow:
@Brooklyn said:can u explain a lil more plz
@ankita14 said:What does that prove? :s
2^100 - 1 = (2^20)^5 - 1 = (2^20 - 1)(2^80 + 2^60 + 2^40 + 2^20 + 1)
Also, 2^120 - 1 = (2^20)^6 - 1 = (2^20 - 1)(2^100 + 2^80 + 2^60 + ... + 1 )
Thus, HCF = 2^20 - 1