self Maths Puzzle

find the sum of all factors of 720

Read Solution (Total 2)

30
LCM of 720= 2power4 + 3power 2 + 5
10 years agoHelpfull: Yes(0) No(1)

sum of all factors is (1+2+4+8+16)*(1+5)*(1+3+9)
=2418
10 years agoHelpfull: Yes(0) No(0)

self Other Question

Find the number of divisors of 20!
A and B throws one dice for a stake of Rs 11, which is to be won by the player who first throws a six. The game ends when the stake is won by A or B. If A has the first throw, then what are their respective expectations?