Question

Find the number of whole numbers in the solution set of following

$3x-1\le 5$ for $x\in W$

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is C $3$

$3x-1\le 5$

$3x\le 5+1$

$x\le \frac{6}{3}=2$

As $x\in W$, there are only three whole numbers which are $2$ or less than $2$, these are $0,1$ and $2$ in the set $x$

$x=(0,1,2)$

Ans. There are $3$ numbers in the set $x$