1

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

Total number of 6-digit numbers in which only and all the five digits 1, 3, 5, 7 and 9 appear, is :

2

JEE Main 2019 (Online) 12th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

A group of students comprises of 5 boys and n girls. If the number of ways, in which a team of 3 students can
randomly be selected from this group such that there is at least one boy and at least one girl in each team, is
1750, then n is equal to :

3

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

The number of ways of choosing 10 objects out of 31 objects of which 10 are identical and the remaining 21
are distinct, is :

4

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

Suppose that 20 pillars of the same height have been erected along the boundary of a circular stadium. If the
top of each pillar has been connected by beams with the top of all its non-adjacent pillars, then the total
number of beams is :

Questions Asked from Permutations and Combinations (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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