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What number multiplied by 10 equals the square of the same number, times 5?

Question 1:

What number multiplied by 10 equals the square of the same number, times 5?

A. 4

B. 5

C. 2

D. 10

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Trivial Practice Quiz brain-teasers - Test 9 | Englishfreetest.com

30 minutes
15 questions