The person is able to guess the digit we select as the sum of the answer is always nine. If I choose 123 and then jumble the digits,I would get 321. As instructed in the game I would then subtract 123 from 321. 321-123=198.The sum of the digits in 198 is 1+9+8=18 and the sum of digits in 18 is 1+8=9. If I circle 1 and type in 89 or 98, The sum of the digits is 9+8=17 and the sum of digits in 17 is 1+7=8. So to get the digit I would subtract 9-8=1. We subtract 8 from 9 because 9 is the sum of the answer. This would be the same formula to find out a chosen digit from a 4-digit number.

The person is able to guess the digit we select as the sum of the answer is always nine. If I choose 123 and then jumble the digits,I would get 321. As instructed in the game I would then subtract 123 from 321.

ReplyDelete321-123=198.The sum of the digits in 198 is 1+9+8=18 and the sum of digits in 18 is 1+8=9. If I circle 1 and type in 89 or 98, The sum of the digits is 9+8=17 and the sum of digits in 17 is 1+7=8. So to get the digit I would subtract 9-8=1. We subtract 8 from 9 because 9 is the sum of the answer. This would be the same formula to find out a chosen digit from a 4-digit number.

i still don't understand

ReplyDeletecan it even load?

i mean the maths website (i think it gets stuck)

I dont get the process, im not that sure about it either.

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ReplyDeleteEven though Akhila's working is there, I still don't understand

ReplyDelete