If the digit in the units place follows a pattern of 8, 4, 2, 6 then the numbers are the in the ascending order of the squares of which of the following number?

Your question was - If the digit in the units place follows a pattern of 8, 4, 2, 6 then the numbers are the in the ascending order of the squares of which of the following number? A few days ago I take part an exam where I have faced this GMAT questions and my answers option were - a. 2 b. 4 c. 6 d. 8 e. None of the above I have answered as my Correct answer is =  d Because of this following Explanation: For solving this question, first we will have to find out the squares of each of the options at least upto a power of 5. Squares of 2 in ascending order = 2, 4, 8, 16, 32 Squares of 4 in ascending order = 4, 16, 64, 256, 1024 Squares of 6 in ascending order = 6, 36, 216, 1296, 7776 Squares of 8 in ascending order = 8, 64, 512, 4096, 32768 From the above results, we can see that the digit in the units place of the squares of number 8 in the increasing order of their powers follows the given pattern i.e. 8 4 2 6. Hence, the correct answer is option d. Hope you have got your answer. Thanks.