Question Detail

For the integer n, if nnn is odd, then what is true

n is odd and n*n is even
n*n is odd
n is even
n*n is odd

Answer: Option A

1. Which of the following is a prime number

Answer: Option B

Explanation:

A prime number is a natural number greater than 1 which has no positive divisors other than 1 or itself.
So from above options 2 is that number

2. What is the unit digit in
\begin{aligned}
(6324)^{1797} \times (615)^{316} \times (341)^{476}
\end{aligned}

Answer: Option D

3. A number when divided by 44, gives 432 as quotient and 0 as remainder. What will be the remainder when dividing the same number by 31

Answer: Option A

Explanation:

P ÷ 44 = 432

=> P = 432 * 44 = 19008

P / 31 = 19008 / 31 = 613, remainder = 5

4. For the integer n, if nnn is odd, then what is true

n is odd and n*n is even
n*n is odd
n is even
n*n is odd

Answer: Option A

5. 217 * 217 + 183 * 183

70578
82578
80578
80568

Answer: Option C

Explanation:

\begin{aligned}
\frac {1}{2}\times 2(a^2 + b^2) = \frac {1}{2} \times [(a + b)^2 + (a - b)^2]
\end{aligned}
\begin{aligned}
= \frac {1}{2} \times [(217 + 183)^2 + (217 - 183)^2] = 80578
\end{aligned}

Tanima Guha 9 years ago

ans is not correct.ex:3 is odd,3*3=9 is odd,3*3*3=27 is odd
harshada 9 years ago

For the integer n, if n*n*n is odd, then what is true
n is odd and n*n is even
n*n is odd
n is even
n*n is odd reg this ques.take a s example 5 ie.5*5*5 so ans either will be B or D.
1729 10 years ago

option D is right
KRISHNENDU 10 years ago

TOTALLY WRONG ANSWER ..ANSWER IS B OR D
ashish 11 years ago

wat if integer is 7 ans is b
GCC 11 years ago

Answer is B and D.
Lets say n is 3 odd no.
n*n=3*3=9 which is odd
n*n*n=3*3*3=27 which is also odd