# Mathematical Quiz

Q1 : 1. Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. What are the marks obtained by them?

Q2 : Given the adjacency list of a bidirectional graph. Your task is to copy/clone the adjacency list for each vertex and return a new list.

Q3 : If $b^{2}-4ac\geqslant 0$ then the roots of quadratic equation $ax^{2}+bx+c=0$ is :-

Q4 : 1)$2y^{2}-11y+12=0$ 2)$\frac{21}{\sqrt{x}}+\frac{11}{\sqrt{x}}=7\sqrt{x}$

Q5 : 1)$22^{x2} + 6\sqrt{11x} – 8 = 0$ 2) $3^{y2} + 14y – 5 = 0$

Q6 : 1)$56x^{2} + 15x – 56 = 0$ 2)$7y^{2} – 34y – 48 = 0$

Q7 : 1) $x = 17^{2} – 13^{2} – 11^{2}$ 2) $y = 4y^{2} – 13y + 9 = 0$

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