self Maths Puzzle

4+3=16
5-3=821
6+3=312
7-3=643
8+3=?

Read Solution (Total 3)

self Other Question

p can complete a work in 16 days, which q can complete in 32 days. If p and q work on alternate days starting with q, in how much time would work be completed? A person has chosen his life insurance plan as follows. At age of 50 he get 20 lakhs. Next year he gets 1 lakh next year 20% less of 1 lakh, i.e 80000 next year 20% less of 80000 and so on.........
If he lives 100 years, What is the total amount that he gets finally.