Are there expressions using which we can list all odd numbers? Class 7

Are there expressions using which we can list all odd numbers? Class 7

Question 1.

Are there expressions using which we can list all odd numbers? Class 7

Solution:

Yes. The expression is 2n - 1; n = 1, 2, 3, ...

Question 2.

What would be the nth term for multiples of 2? Or, what is the nth even number? Class 7

Solution:

It will be 2 × n = 2n.

Question 3.

What is the 100th odd number? Class 7

Solution:

100th odd number = 2 × 100 - 1 = 199. (Using 2n - 1)

Question 4.

What is the 100th even number? Class 7

Solution:

100th even number = 2 × 100 = 200.