The Math Funfair

Question 1

Even + Even =

Accepted Answer

Even

Answer

odd

Answer

either even or odd

Answer

0

Question 2

Odd x Odd =

Accepted Answer

odd

Answer

Even

Answer

either even or odd

Answer

0

Question 3

A number for which sum of all its factors is equal to twice the number is called a

Accepted Answer

Perfect number

Answer

Prime number

Answer

Co-prime number

Answer

Composite number

Question 4

General form of a perfect number is

Accepted Answer

$2 ^{P-1}(2^P -1)$ where p is a prime

Answer

$2 ^P$, where p is a prime

Answer

$2^{P-1}$, where p is a prime

Answer

$2^P-1$, where p is a prime

Question 5

The natural number having exactly two different factors namely 1 and itself, are known as

Accepted Answer

Prime numbers

Answer

Even numbers

Answer

Odd numbers

Answer

Perfect number

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