A $4 \times 4$ digital image has pixel intensities $(U)$ as shown in the figure. The number of pixels with $U \leq 4$ is:

In the given figure, the numbers associated with the rectangle, triangle, and ellipse are 1,2 , and 3 , respectively. Which one among the given options is the most appropriate combination of P , Q , and R ?

A rectangle has a length L and a width W . where $\mathrm{L}>\mathrm{W}$. If the width, W , is increased by $10 \%$, which one of the following statements is correct for all values of L and W ?

Column-I has statements made by Shanthala; and, Column-II has responses given by Kanishk.