Question

if 'x' is a natural number, which among the following is always an odd number? 1) x+1 2)2x 3)2x-1 4)x-1​

Answer 1

Answer:

2x-1

Step-by-step explanation:

Let the natural number be x

So

2x will always be even

(eg. if x=3,2x=6 ; x=4,2x=8)

So 2x-1 is always odd

(An odd number always precedes an even number)

Answer 2

Answer:

Let 1 be the natural number

1.x+1=1+1=2

2.2x=2*1=2

3.2x-1=2*1-1=2-1=1

4.x-1=1-1=0

Step-by-step explanation:

Option 3 is always an odd number