# Mathematical Induction · Mathematics · WB JEE

Start Practice## Subjective

WB JEE 2008

$$A = \left[ {\matrix{
1 & 2 \cr
0 & 1 \cr
} } \right]$$ then by the principle of mathematical induction, prove that $${A^n} = \left[ {\ma...

WB JEE 2010

Prove by induction that for all n $$\in$$ N, n2 + n is an even integer (n $$\ge$$ 1).

## MCQ (Single Correct Answer)

WB JEE 2009

Product of any r consecutive natural numbers is always divisible by

WB JEE 2009

For each n $$\in$$ N, 23n $$-$$ 1 is divisible by
here N is a set of natural numbers.

WB JEE 2011

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

WB JEE 2023

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

WB JEE 2019

72n + 16n $$-$$1 (n$$ \in $$ N) is divisible by