self Maths Puzzle

(a-1)(b-1)(c-1)....(z-1)

Read Solution (Total 2)

self Other Question

If 63+25=12, 21+27=16 and 42+29=20, then 51+31=??

Explain??
A man is visited by his 9 friends in the following pattern.The first friend visited
every day.The second visited every second day.The third visited every third day and so on
upto 9th friend on every 9th day.When will they all meet together?? Explain??