Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
f(N)=[N/1] + [N/2] + [N/3]+ ....+ [N/N] . Find f(64)-f(63).
If you could reason carefully you see f(N+1)-f(N)=no. of factors og N+1. Because only for these numbers(factors of N+1) ; [N+1/these no.]=[N/these no.]+1. You could verify it for any no. N. f(64)-f(63)=7 ;{factors of 64 are 1,2,4,8,16,32,64}.
If you could reason carefully you see f(N+1)-f(N)=no. of factors og N+1.
Because only for these numbers(factors of N+1) ; [N+1/these no.]=[N/these no.]+1.
You could verify it for any no. N.
f(64)-f(63)=7 ;{factors of 64 are 1,2,4,8,16,32,64}.
Find solution of question on doubt solving app Instasolv
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -