Question

solve these
21/23 - 10/23​

Answer 1

Answer:

21/23-10/23

=(21-10)/23

=11/23

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Answer 2

Explanation:

In this simple alternating subtraction and addition series;

1 is subtracted, then 2 is added, and so on.

Rule = (first number - 1) (second number + 2) (third number - 1) (fourth number + 2)......

Now The series is 22, 21, 23, 22, 24, 23, . . .

(22 - 1 = 21), (21 + 2 = 23), (23 - 1 = 22), (22 + 2 = 24), (24 - 1 = 23) (23 + 2 = 25)...

So the answer is c = 25.