Question

how many wheat grains will be there on a chessboard if you place one on the 1st squre and placing 2 times the 'no. of grains on the preceding' on every next square?

Answer 1

its a geometric sequence ..
2^0 + 2^1 + ... + 2^63

Answer 2

do you know the formula for sum of n elements in a geometric sequence ?

Answer 3

oh yeh he is right

Answer 4

nope! you're missing something.

Answer 5

so i dont really understand the question

Answer 6

what do you mean by 'preceding' ? in both directions ?

Answer 7

definetely not! you have done correctly but missed 1 to add. 2^63 + 1

Answer 8

aah sorry i didn't read ur anwer correctly ur right gd job

Answer 9

:)

Answer 10

bhai close kar de question ko