self Maths Puzzle

find the number of digits required to write down the number of pages in a 300 pages book.

Read Solution (Total 2)

9+180+603= 792 digits
11 years agoHelpfull: Yes(4) No(2)

9*1+89*2+201*3=790
11 years agoHelpfull: Yes(0) No(0)

self Other Question

Thr number of ways in which 30 coins of one rupee each be given to six persons so that none of them receives less than 4 rupees is:

Option
a) 246
b) 462
c) 30!/6!
d) None of these
A man has four sons .there are 6 proposals of marriage for his sons. In how many ways can they select a proposal for their marriages,such that none of them marry with more than one girl.

Option
a) 180
b) 270
c) 360
d) none of these