SOLUTION: I am doing a practice apptitude test and have a question which is 3*=81 what is the value of * , they say the answer is 4 .I am having trouble understanding this. Could you please
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Question 700262: I am doing a practice apptitude test and have a question which is 3*=81 what is the value of * , they say the answer is 4 .I am having trouble understanding this. Could you please explain this to me? Thankyou, Its been a long time since school for me.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
prime factors of 81 are 3*3*3*3
3*3*3*3=81
so 3^4= 81
3^*=4=3^4
*=4
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