Question

Here is an easy puzzle:

Take a break and solve this puzzle..
A king asks a learned man to visit his palace. The man says I will come any day next month. But give me gold in gms equal to the date on which I come. The king asks the jeweler to make rings of 1 to 31 gms. The jeweler was smart and makes only 5 rings. What was the weights of those rings?

Answer 1

the answer is
date
1 2 3 4 5 31
r1 r2 r3 r4 r5 . . . r31
1gm 2gms 3gms 4gms 5gms . . . 31gms

r1+r2+ .... +r31= 31(31+1) /2=496gms (31 rings)

he only made 5 rings

31 rings----------> 496 gms
5 rings ------------> ? = 5 x496 / 31=80 gms

the weights of those 5 rings was 80 gms