Maximum times a number is successively doubled orally in 30 seconds
The record for successively doubling a number orally for the maximum number of times in 30 seconds was set by Sahil Madhwani (born on April 10, 2002) of Bhubaneswar, Odisha. He started with a 2- digit number ‘75’ and successively doubled it 17 times to get the correct answer 98, 30, 400 in 30 seconds, as confirmed on March 10, 2022.