1.After the existence of a quorum has been determined in a meeting of stockholders, a number of them left the meeting, thereby leaving less than a quorum. Is the majority vote of the present sufficient to validly decide a matter properly presented?

2.X pledge his shares of stock to Y. as between them, who as the right to attend and vote at meetings of stockholders?

3.A meeting of a stockholders was improperly called and held. The business transacted at the meeting was questioned. What arguments can be raised to uphold its validity?