A) 8
B) 16
C) 9
D) 18
Correct Answer: D
Solution :
Clearly from 1 to 80, there are numbers with 4 as the unit's digit - 4, 14, 24, 34, 44, 54, 64, 74 and ten number with 4 as tens digit - 40, 41, 42, 43, 44, 45, 46, 47, 48, 49. So, required number = 8 + 10 = 18.You need to login to perform this action.
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