Q.1
Correct Answer is:C
Solution Explain:
Q.2
Correct Answer is:C
Solution Explain:
Q.3
Correct Answer is:C
Solution Explain:
Q.4
Correct Answer is:C
Solution Explain:
Q.5
Correct Answer is:C
Solution Explain:
Q.6
Correct Answer is:B
Solution Explain:
Q.7
Correct Answer is:D
Solution Explain:
Q.8
Correct Answer is:D
Solution Explain:
Q.9
Correct Answer is:D
Solution Explain:
Q.10
Correct Answer is:D
Solution Explain:
Q.11
Correct Answer is:A
Solution Explain:
Two distinct odd digits for the second and fourth places can be selected in 4C2= 6 ways (since we canot take 1,as first digit will be at least 2). Now these can be arranged in increasing order in one way only.Similiarly two distinct even digits for the first and third places can be selected in 4C2= 6 ways (since we cannot take 0) now these can be arranged in increasing order in one way only.
Now total number of ways of filling the four places is 6×6=36
But this contains the numbers of the type 6385 which are not needed. So number of such numberswill be less than 36.
Q.12
Correct Answer is:C
Solution Explain:
Q.13
Correct Answer is:B
Solution Explain:
Q.14
Correct Answer is:B
Solution Explain:
Q.15
Correct Answer is:A
Solution Explain:
Q.16
Correct Answer is:D
Solution Explain:
Q.17
Correct Answer is:B
Solution Explain:
Q.18
Correct Answer is:B
Solution Explain:
Q.19
Correct Answer is:C
Solution Explain:
Q.20
Correct Answer is:A
Solution Explain:
Q.21
Correct Answer is:C
