Number System Practice Test 1

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Question : 18 of 40

Marks: +1, -0

Find the value of x in 39 × 40 × 87 × 58 × 63 × 9x × 52, if the unit place digit of the given expression is “0”.

will always be an even number
will always be a odd number
will always be a prime number
can be any natural number
can be any number between 0 to 9.

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