Question
The tens digit of 617 is -
Answer: Option B
:
B
We can use the last two digits technique to solve this question.
617=317×217
317=(34)4×3=(32×32)4×3=(09×09)4×3=814×3=21×3=63
217=(210)1×27=24×......28=.....72
Answer is the tens digit of the product of 72 and 63 = ...36.
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:
B
We can use the last two digits technique to solve this question.
617=317×217
317=(34)4×3=(32×32)4×3=(09×09)4×3=814×3=21×3=63
217=(210)1×27=24×......28=.....72
Answer is the tens digit of the product of 72 and 63 = ...36.
Was this answer helpful ?
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