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Question
Number of whole numbers between 38 and 68 is ______.
Options
31
30
29
28
Solution
Number of whole numbers between 38 and 68 is 29.
Explanation:
Whole numbers between 38 and 68 are 39, 40, 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 and 67.
Total whole numbers between 38 and 68 = 29
Alternate Method: Let a = 38 and b = 68
Then, number of whole numbers between a and b
= b – a – 1 ....[When b > a]
Number of whole numbers between 38 and 68 = 68 – 38 – 1 = 29
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