30
MCQ (Single Correct Answer)
The sum of the digits in unit place of all the numbers formed with the help of 3, 4, 5 and 6 taken all at a time is
A
432
B
108
C
36
D
18
31
MCQ (Single Correct Answer)
The total number of words formed by 2 vowels and 3 consonants taken from 4 vowels and 5 consonants is
A
60
B
120
C
7200
D
720
32
MCQ (Single Correct Answer)
If a five-digit number divisible by 3 is to be formed using the numbers $0,1,2,3,4$ and 5 without repetitions, then the total number of ways this can be done is
A
216
B
600
C
240
D
3125
33
MCQ (Single Correct Answer)
Everybody in a room shakes hands with everybody else. If the total number of hand shakes is 66 , then the total number of persons in the room is
A
11
B
12
C
13
D
14
34
MCQ (Single Correct Answer)
The number of triangles that are formed by choosing the vertices from a set of 12 points, seven of which lie on the same line is
A
105
B
15
C
175
D
185