IBPS RRB Officer Scale 1 Model Paper 13

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Directions (Qs. 76-80): In each of these questions, two equations I and II are given. You have to solve both the equations and give answer
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Question : 77 of 80
 
Marks: +1, -0
I. 679x2 – 168x2 = 3066 II. 144y3 - 9y3= 1536
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