Question

Q.20)
Prashanth wants to distribute 127 one-rupee coins into different piggy-banks so that any
integer sum from 1 through 127 rupees can be paid by just handing over few or all the piggy
banks without breaking open the piggy banks. What is the minimum possible number of pigg
banks required?
(1) 7
(2) 8
(3) 6
(4) 10
(5) 5
solve plz​

Answer 1

7After the fall of Constantinople in 1453 the trade route was occupied by the Ottamans who levied very high trade taxes on the transit European goods to the east. Hence Europeans went on the quest of finding a sea route to Asia. Thus the Portuguese noble Vasco da Gama succeded in finding the sea route to India.

Answer 2

Answer:

7

Step-by-step explanation:

you may do trial and error method,

i was trying like, to pay 1 then 2....8..11 rupees, minimum no. of required banks. then I tried to fill money in the banks.

then i found it to be 1 in first bank, 2 in second,4 in third,8 in fourth ,16 in 5th, 32 in 6th,64 in seventh.

you may ask why it not like 1,2,3,4..., because we need the minimum banks. and I checked my answer for randoms like 127, 4, 37, etc.

it was forming a sequence, so it strengthen my arguments.

but i didnt know mathematical proof, sorry for that.

by the way, what is the book name