1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

$$A$$ and $$B$$ are non-singleton sets and $$n(A \times B)=35$$. If $$B \subset A$$, then $${ }^{n(A)} C_{n(B)}$$ is equal to

A
28
B
35
C
42
D
21
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A student has to answer 10 questions, choosing at least 4 from each of the parts $$A$$ and $$B$$. If there are 6 questions in part $$A$$ and 7 in part $$B$$, then the number of ways can the student choose 10 questions is

A
256
B
352
C
266
D
426
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Medical
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Class 12