Question

I have a natural number in my mind. After doubling it, I subtract 5 from it before dividing the answer by 3. Then, I multiply the result by itself and subtract 192 from it. Finally, I obtain the largest 2-digit prime number. What is the original number that I have in mind?

Answer 1

Answer:

28

Step-by-step explanation:

Number = x

Largest two digit prime number = 97

[ ( ( 2 x - 5) / 3 ) ^2 ] - 192 = 97

[ ( ( 2 x - 5) / 3 ) ^2 ] = 97+192

[ ( ( 2 x - 5) / 3 ) ^2 ] = 289

( ( 2 x - 5) / 3 ) = 17

( 2 x - 5) = 17*3 = 51

2x = 56

x = 28

Answer 2

Answer:

I think my answer is right

Step-by-step explanation:

100