self Maths Puzzle

5+3+7=411109
7+6+9=909310
9+5+8=?

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self Other Question

does u wish to multiply the number for easier.
here is the simple maths tricks
if it is odd number......
number=75 then add 0 @ last so it will become 750 and divide it by 2
then the answer 375
for even number....
just divide the number by two and add 0 @ last
ex:-278 now divide it by two then it will become 136 and 0 at last then the answer is 1360......... Three Ladies went to a hotel to share a room.

The clerk asked for $300.

Each Lady paid $100, making up the $300.

The hotel keeper then decided to allow a discount for the day, charging only $250 for the room.

He told the clerk to return $50 to the three Ladies.

The clerk pocketed $20 for himself. He gave the remaining $30 back to the three Ladies.

Each Lady took back $10. Therefore, each Lady paid 100 - 10 = $90 to the hotel.

$90 x 3 = $270 + the clerk's $20 = $290.

Question:Where has the remaining $10 gone?