Asit Das Gupta and Alok Kumar Solutions for Exercise 2: EXERCISE 1B

Write the following sets in the tabular form and find their cardinal numbers. 

$\mathrm{C}= \left\{\mathrm{x}|\mathrm{x} \mathrm{is} \mathrm{a} \mathrm{letter} \mathrm{of} \mathrm{the} \mathrm{word} \mathrm{MATHEMATICS}\right\}$

Write the cardinal number of the given sets

$\mathrm{B}=\left\{\mathrm{x}\right|\mathrm{x}$ is a proper divisor of $20\}$

Write the cardinal numbers of the given set and write in tabular form.

$\mathrm{c}=\left\{\mathrm{x}\right|\mathrm{x}$ is an odd natural number less than $15\}$

Write the cardinal numbers of the given set and write in tabular form.

$\mathrm{D}=\left\{\mathrm{x}|\mathrm{x}\in \mathrm{W} \mathrm{and} 3\mathrm{x}+2=0\right\}$

Write the cardinal numbers of the given set and write in tabular form.

$\mathrm{E}=\left\{\mathrm{x}\right|\mathrm{x}\in 1$ and $-1\le \mathrm{x}\le 1\}$

Find $\mathrm{n}\left(\mathrm{A}\right)$ in the given set and write in tabular form.

$\mathrm{A}=\left\{\mathrm{x}|\mathrm{x}\in \mathrm{N} \mathrm{and} \mathrm{x}\times \mathrm{x}<31\right\}$ 

Find $\mathrm{n}\left(\mathrm{A}\right)$ in the given set and write in tabular form
$A=\left\{\mathrm{x}|\mathrm{x}\in \mathrm{W} \mathrm{and} 5\mathrm{x}=3\right\}$

Find $\mathrm{n}\left(\mathrm{A}\right)$ in the given set and write in the tabular form

$\mathrm{A}=\left\{\mathrm{x}|\mathrm{x} \mathrm{is} \mathrm{a} \mathrm{prime} \mathrm{factor} \mathrm{of} 2310\right\}$