MCQ
Which of the following is set?
- AThe collection of months having names starting with J.
- BThe collection of smart boys in your class.
- CThe collection of most talented persons.
- DThe collection of sand grains in a Earth.
Solution:
As the collection of months having names starting with J is well defined. So, it's a set. Rest are not well defined , hence are not set.
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The value of $\tan3\text{A}-\tan2\text{A}-\tan\text{A}$ is equal to:
$\tan3\text{A}\tan2\text{A}\tan\text{A}$
$-\tan3\text{A}\tan2\text{A}\tan\text{A}$
$\tan\text{A}\tan2\text{A}-\tan2\text{A}\tan3\text{A}\tan\text{A}$
$\text{None of these}$
Two unbiased coins are tossed simultaneously. Find the probability of getting at most one head.
A plane is parallel to yz-plane so it is perpendicular to: