railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Simplification Surds and Indices

প্রদত্ত 2^x = 8^y+1 এবং 9^y = 3^x-9, x + y এর মান হল

1

21

2

18

3

24

4

27

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