1
JEE Main 2021 (Online) 24th February Morning Shift
+4
-1
A scientific committee is to be formed from 6 Indians and 8 foreigners, which includes at least 2 Indians and double the number of foreigners as Indians. Then the number of ways, the committee can be formed, is :
A
1050
B
575
C
560
D
1625
2
JEE Main 2020 (Online) 6th September Morning Slot
+4
-1
Two families with three members each and one family with four members are to be seated in a row. In how many ways can they be seated so that the same family members are not separated?
A
2! 3! 4!
B
(3!)3.(4!)
C
3! (4!)3
D
(3!)2.(4!)
3
JEE Main 2020 (Online) 5th September Evening Slot
+4
-1
There are 3 sections in a question paper and each section contains 5 questions. A candidate has to answer a total of 5 questions, choosing at least one question from each section. Then the number of ways, in which the candidate can choose the questions, is :
A
2250
B
2255
C
3000
D
1500
4
JEE Main 2020 (Online) 3rd September Morning Slot
+4
-1
The value of (2.1P0 – 3.2P1 + 4.3P2 .... up to 51th term)
+ (1! – 2! + 3! – ..... up to 51th term) is equal to :
A
1
B
1 + (51)!
C
1 – 51(51)!
D
1 + (52)!
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