The digit in the unit place of 3^73 + 7^37 is:
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The digit in unit place of 3⁷³+7³⁷ is = 0
Step-by-step explanation:
3¹=3
3²=9
3³=27
3⁴=81
3⁵=243
It is cyclic of 4 . If 73 is divided by 4 then reminder = 1
3¹=3
Therefore the unit digit of 3⁷³= 3
7¹=7
7²=49
7³=343
7⁴=2401
7⁵=16807
It is also cyclic of 4. If 37 is divided by 4 the reminder=1
Therefore the unit digit of 7³⁷=7
7+3=10
The digit in unit place of 3⁷³+7³⁷ is = 0
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