Question

first number is 2 once place
second number is 4 tens place
find the number and add 10 to the number
subtract 2
multiply by 2
subtract 20
_^_^_^_^_^_^_^_^_^_^_^_^_^_^_
tell yes or no
1. your number is 45 (yes/no)
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Answer 1

solution:

$42 + 10 = 52 \\ 52 - 2 = 50 \\ 50 \times 2 = 100 \\ 100 - 20 = 80 \\ \\ the \: number \: is \: not \: 45 \: it \: is \: 80$

the no. is 80

it's not 45