Question

how many whole number are there upto 80? total​

Answer 1

Step-by-step explanation:

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}⟹0+(n−1)×1=80

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

\sf{ \implies \: n = 80 + 1}⟹n=80+1

\sf{ \implies \: n = 81}⟹n=81

FINAL ANSWER

The number of whole numbers upto 80 = 81

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Answer 2

Step-by-step explanation:

41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70,71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100.