Let A = a, b , B = a, b, c . What is A B ? - Vidyadip

MCQ

Let $A = \{a, b\}, B = \{a, b, c\}.$ What is $\text{A }\cup\text{ B }?$

A
$\{a, b\}$
B
$\{a, c\}$
✓
$\{a, b, c\}$
D
$\{b, c\}$

✓

Answer

Correct option: C.

$\{a, b, c\}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Sets→Sets — all question types→Maths STD 11 Science question papers→CBSE Board STD 11 Science question papers→CBSE Board question paper generator→

Similar questions

Of the members of three athletic teams in a school $21$ are in the cricket team, $26$ are in the hockey team and $29$ are in the football team. Among them, $14$ play hockey and cricket, $15$ play hockey and football, and $12$ play football and cricket. Eight play all the three games. The total number of members in the three athletic teams is

If $\log _{3} 2, \log _{3}\left(2^{x}-5\right), \log _{3}\left(2^{x}-\frac{7}{2}\right)$ are in an arithmetic progression, then the value of $x$ is equal to $.....$

Let $X$ be the set consisting of the first $2018$ terms of the arithmetic progression $1,6,11$,

. . . .and $Y$ be set consisting of the first $2018$ terms of the arithmetic progression $9, 16, 23$,. . . . . Then, the number of elements in the set $X \cup Y$ is. . . .

The complex numbers $\sin x + i\cos 2x$ and $\cos x - i\sin 2x$ are conjugate to each other for

$(a, c)$ and $(b, c)$ are the centres of two circles whose radical axis is the $y-$ axis. If the radius of first circle is $r$ then the diameter of the other circle is:

The total number of $5$-digit numbers, formed by using the digits $1,2,3,5,6,7$ without repetition, which are multiple of $6$, is

If $a,\;b,\;c$ are in $G.P.$ and $x,\,y$ are the arithmetic means between $a,\;b$ and $b,\;c$ respectively, then $\frac{a}{x} + \frac{c}{y}$ is equal to

The area of triangle formed inside the parabola ${y^2} = 4x$ and whose ordinates of vertices are $1, 2$ and $4$ will be

${\left( {\frac{{1 + i}}{{1 - i}}} \right)^2} + {\left( {\frac{{1 - i}}{{1 + i}}} \right)^2}$is equal to

$7^{2n}+ 3^{n-1}⋅ 2^{3n-3}$ is divisible by: