Question

From $10$ persons waiting in a queue, in how many ways can a selection of $6$ be made so that A specified person is always included?

• A. $126$
• B. $84$
• C. $150$
• D. $252$

Answer 1

The correct option is A $126$

Total number of person $=10$

Number of person to be selected$=6$

Hence a specified person is always included

$=1{\times }^9{C}_5=126$

Hence the correct answer is $126$