Question

If 57=6, 642=4, 873=6, 99=?​

Answer 1

Answer:

9

Step-by-step explanation:

for 2 digit numbers, sum of numbers /2

for 3 digit number,sum of numbers/3

5+7 = 12/2 = 6

6 + 4 + 2= 12/3=4

8+7+3 = 18/3= 6

then 9+9 = 18/2 = 9

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Answer 2

Answer:

$9$

Step-by-step explanation:

It is the correct answer.