If ‘x’ is the unit digit of pq, what is the value of x?

  • p and q will be given to you.
Number: pq
pq
120650
12561345
122556
243329
1247777
1245                        89782
1246234
1247124
124825
124945

45/2=22

45%2=1

Unit digit(m)Unit digit produced from power(n) of m (mn)Formula For unit digit calculationpqUnit digits of pq
0001206500
111125613451
22, 4 , 8, 6(n%4)th digit of the sequence1225566
33, 9, 7, 1(n%4)th digit of the sequence24337
44, 6(n%2)th digit of the sequence12477774
5551245897825
66612462346
77, 9, 3, 1(n%4)th digit of the sequence12471241
88, 4, 2, 6(n%4)th digit of the sequence1248258
99, 1(n%2)th digit of the sequence1249459

Important Note: if n%4 or n%2 provides result 0, the last digit of the sequence will be the unit digit of mn

For details, see the video https://youtu.be/b6lbcfMcaF4

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