Question

number of whole number between 48 and 78​

Answer 1

Answer:

whole numbers between 48 and 78=

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

there is total 30 number between 48 and 78

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Answer 2

There are 29 whole numbers between 48 and 78

Given :

The numbers 48 and 78

To find :

The number of whole numbers between 48 and 78

Concept :

The nth term of an AP is

aₙ = a + (n - 1 )d.

a = first term

aₙ = nth term

d = common difference.

Solution :

Step 1 of 3 :

Write down the given numbers

Here the given numbers are 48 and 78

The whole numbers between 48 and 78 are 49 , 50 , 51 , ... , 77

This is an arithmetic progression

Step 2 of 3 :

Write down first term and common difference

First term = a = 49

Common Difference = d = 50 - 49 = 1

Step 3 of 3 :

Find the number of whole numbers between 48 and 78

Let 77 is the nth term of the AP

⇒ a + (n - 1)d = 77

⇒ 49 + (n - 1) = 77

⇒ n + 48 = 77

⇒ n = 77 - 48

⇒ n = 29

Hence there are 29 whole numbers between 48 and 78

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