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Grade: 12

                        

The number of different numbers which are smaller than 2x10^8 and are divisible by 3, can be written by means of 0,1and 2 must be _______

3 years ago

Answers : (1)

Arun
24742 Points
							
I am getting this as -
3digits - 2⋅3=6
4digits - 2⋅3⋅3=18
5 digits - 2⋅3⋅3⋅3=54
6digits - 2⋅3⋅3⋅3⋅3=162
7 digits - 2⋅3⋅3⋅3⋅3⋅3=486
8 digits - 2.3.3.3.3.3.3 = 1458
From 10^8 to 2×10^8- 2⋅3⋅3⋅3⋅3⋅3⋅3⋅3⋅3/2=2187
On adding
4371 
This is the correct answer
3 years ago
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