BITSAT SERIES Mathematics
Combinations
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
1
2015 1
2013 1
2005 Chapter Questions 3 MCQs
01
PYQ 2005
easy
mathematics ID: bitsat-2
Total number of books is . One is allowed to select a minimum of the one book and a maximum of books. If total number of selections if , then value of is :
1
3
2
6
3
2
4
none of these
02
PYQ 2013
medium
mathematics ID: bitsat-2
A box contains two white balls, three black balls and four red balls. In how many ways can three balls be drawn from the box if at least one black ball is to be included in the draw?
1
64
2
129
3
84
4
None of these
03
PYQ 2015
medium
mathematics ID: bitsat-2
The total number of -digit numbers in which the digits are in descending order, is
1
2
3
4
None of these