A few days ago

# math again, help please.?

if n is a whole number which of the following must be an odd number?

a]3n

b]6n

c]3n+1

d]3n+2

e]2n+1

Top 7 Answers

A few days ago

Favorite Answer

it has to be (e) because… if you multiply a number by 2 it will ALWAYS be even and if you add 1 to it it will become odd.

1

A few days ago

the answer is E) 2n+1

2*1+1=3

2*2+1=5

2*3+1=7

anything multiplied by 2 is going to be even then when you add 1 is becomes odd.

0

A few days ago

c]3+1

0

A few days ago

2n+1

coz 2n is ALWAYS even*

and +1 => number after that.

After a even a odd comes

therefore 2n+1 must be even

_______________________

*2n is a standard expression for generating even numbers

coz anything *2 =even

also

2n+1 is a standard expression for generating odd numbers

0

A few days ago

2n+1

1

A few days ago

The answer is e, just try plugging in a bunch of random numbers for n and you’ll see the answer always comes out odd.

1

A few days ago

WHAT???

0

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