1
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

For each n $$\in$$ N, 23n $$-$$ 1 is divisible by

here N is a set of natural numbers.

A
7
B
8
C
6
D
16
2
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

The number (101)100 $$-$$ 1 is divisible by

A
104
B
106
C
108
D
1012
3
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Let $$P(n) = {3^{2n + 1}} + {2^{n + 2}}$$ where $$n \in N$$. Then

A
P(n) is not divisible by any prime integer.
B
there exists prime integer which divides P(n).
C
P(n) is divisible by 5 for all $$n \in N$$.
D
P(n) is divisible by 3 for all $$n \in N$$.
4
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
72n + 16n $$-$$1 (n$$ \in $$ N) is divisible by
A
65
B
63
C
61
D
64
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