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B
it is divisible by both 5 and 18
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C
it is divisible by both 9 and 10
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D
all the above
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Solution
The correct option is A all the above ∵∵ If a number is divisible by 'a' and 'b' where 'a' & 'b' are co-primes then that number is divisible by 'ab' Here 2,45;5,18;9,10 are co-primes