It takes 400 grams or about 19,200 grains of rice to feed one adult for a day.
There are approximately 48 grains of rice in a single gram.
Freerice is a multiple choice online quiz which was originally designed by a programmer to help his children revise. He subsequently donated it to the UN World Food Programme to help feed people around the world.
For every correct answer, ten grains of rice are donated to the UN Food Programme who pass it to countries around the world. The rice is paid for by sponsors who post adverts at the bottom of Freerice pages when you get an answer correct.
The leading class at the moment are 4C1, followed by 6A and 2M1.
Good luck for tomorrow!