Subject Experts Solutions for Chapter: Mathematical Operations & Arithmetical Reasoning, Exercise 3: EXERCISE - 2

If the given interchanges namely: signs $+$and$÷$ and numbers $2$ and 4 are made in signs and numbers, which one of the following four equations would be correct?

One line forms two regions in a plane.Similarly, two lines in a plane can form a maximum of four regions. These are shown in the figures below:

What is the maximum number of regions that can be formed by $4$ lines in a plane? Lines need not be concurrent.

In a farmhouse there are $50$ hens, $45$ goats and $8$ camels which are maintained by few supervisor. If the total number of feet be $224$ more than the number of heads in the farmhouse then the total number of supervisor is 

What will be the number of digits used in numbering the pages of a book having 199 pages

If in a certain code

$23\times 26=42$ and $11\times 15=19$ then, $32\times 16=?$

From each box you can move only to the immediate right box or the immediate top box. You cannot move into or through the shaded box. How many ways are there to move from the  box marked S to the box marked D.

One line forms two regions in a plane. Similarly, two lines in a plane can form maximum of four regions.

These are shown in the figure below.

What is the maximum number of  regions that can be formed by 4 lines in a plane. Lines need not be concurrent.

If in a certain code $23\times 26=42$ and $11\times 15=19$, then $32\times 16=?$