Question

how many whole numbers are there upto 80

Answer 1

SOLUTION

TO DETERMINE

The number of whole numbers upto 80

EVALUATION

Here we have to find the number of whole numbers upto 80

Now the whole numbers upto 80 are

0 , 1 , 2 , 3 , ... , 80

This is an arithmetic progression with

First term = a = 0

Common Difference = d = 1 - 0 = 1

Let there are n terms

So n th term = 80

$\sf{ \implies \: 0 + (n - 1) \times 1 = 80}$

$\sf{ \implies \: (n - 1) = 80}$

$\sf{ \implies \: n = 80 + 1}$

$\sf{ \implies \: n = 81}$

FINAL ANSWER

The number of whole numbers upto 80 = 81

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