What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?
Solution
Correct Answer: Option B
Solution: L.C.M of 12, 18, 21, & 30 is = 1260
অতএব সংখ্যাটি হবে ১২৬০ এর অর্ধেক ৬৩০
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