1
JEE Main 2019 (Online) 10th April Evening Slot
+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 :
A
180
B
210
C
170
D
190
2
JEE Main 2019 (Online) 10th April Morning Slot
+4
-1
The number of 6 digit numbers that can be formed using the digits 0, 1, 2, 5, 7 and 9 which are divisible by 11 and no digit is repeated is :
A
36
B
60
C
72
D
48
3
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
A committee of 11 members is to be formed from 8 males and 5 females. If m is the number of ways the committee is formed with at least 6 males and n is the number of ways the committee is formed with at least 3 females, then :
A
n = m – 8
B
m = n = 78
C
m + n = 68
D
m = n = 68
4
JEE Main 2019 (Online) 8th April Evening Slot
+4
-1
The number of four-digit numbers strictly greater than 4321 that can be formed using the digits 0,1,2,3,4,5 (repetition of digits is allowed) is :
A
306
B
288
C
310
D
360
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