MCQ
For each $n \in N$, then $3^{2 n+1}+1$ is divisible by:
  • 2
  • B
    3
  • C
    7
  • D
    None of these

Answer

Correct option: A.
2
  1. 2

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The line $lx + my + n = 0$ will touch the parabola ${y^2} = 4ax$, if
If the mean and variance of the following data:

$6,10,7,13, a, 12, b, 12$ are 9 and $\frac{37}{4}$ respectively, then $(a-b)^{2}$ is equal to:

Consider the experiment of rolling a die. Let $A$ be the event 'getting a prime number ', $B$ be the event 'getting an odd number '. Write the sets representing the events $A$ and $B$
The points $( - a,\, - b),\;(0,\,0),\;(a\,,b)$ and $({a^2},ab)$ are
If the common tangents to the parabola, $x^2 = 4y$ and the circle, $x^2 + y^2 = 4$ intersect at the point $P$, then find the square of the slope of the line:
In a room there are 12 bulbs of the same wattage, each having a separate switch. The number of ways to light the room with different amounts of illumination is:
Let A = {1, 2} B = {1, 2, 3, 4} C = {5, 6} and D = {5, 6, 7, 8} Following statements are given below:
  1. $ \text{A }\times ({\text{B} \cap\text{C})} = (\text{A}\times \text{ B}) ∩ (\text{A}\times \text{ C})$
  2. A, C is a subset of $\text{ B }\times\text{ D}$
Which of the following statment is correct?
Let $\lambda \neq 0$ be a real number. Let $\alpha, \beta$ be the roots of the equation $14 x^2-31 x+3 \lambda=0$ and $\alpha, \gamma$ be the roots of the equation $35 x^2-53 x+4 \lambda=0$. Then $\frac{3 \alpha}{\beta}$ and $\frac{4 \alpha}{\gamma}$ are the roots of the equation :
In how many ways a committee consisting of 5 men and 3 women, can be chosen from 9 men and 12 women:
Eight straight lines are drawn in the plane such that no two lines are parallel and no three lines are concurrent.The number of parts into which these lines divide the plane, is: