Question

if you keep a grain of rice in the first square of a chess board and two in the second square 4 in the third square and 8 in the fourth square what will be number of rice in the 64 square​

Answer 1

No. of rice grains in 1st square = 2

-------------------2nd -------=

$4 = {2}^{2}$

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No. of rice grains in nth square

$= {2}^{n}$

for, n= 64

no.of grains

$= {2}^{64} = 1.845 \times {10}^{19} grains$

Hope it helps（＾＿－）≡★

Answer 2

Hope it will helps you mate