Question
The smallest 3-digit prime number is added to the LCM of
first three odd prime numbers to obtain a number ‘Y’. Find the unit digit of ‘Y’.Solution
ATQ,
LCM of first three odd prime numbers = (3 × 5 × 7) = 105 So, ‘Y’ = 105 + 101 = 206 Unit digit of ‘Y’ = 6
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