Question

7. Which of the following number have 9 in unit digit in its square ,3,13 ,19. [ ]
A) 3 B) 13 C)3,13 D) 19.​

Answer 1

Answer:

C) 3, 13

Step-by-step explanation:

3² = 9

13² = 169

Both have 9 in its units place

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