Rohan whipped his head toward the door. The corridor outside was silent. Then he heard it. The soft, rhythmic squeak of chalk on a blackboard.
Rohan’s mouse hovered over the final problem number: 999. He hadn't even reached that chapter in the book. But the PDF had a direct link. He clicked. a das gupta solutions pdf iit jee
x = the solution. ∴ the seeker is the solution. Rohan whipped his head toward the door