Answers

2016-01-05T15:38:34+05:30
May b 61725
not sure it can b wrong.....
0
2016-01-05T15:41:47+05:30
S=5+55+555+.........upto n terms. S=5(1+11+111+............upto nterms)
S=5/9(9+99+999+........n)
S=5/9(10-1+100-1+1000-1+....)
S=5/9(10+100+1000......upto n terms-n)
S=5/9[10(10powern-1)/9 -n]
0