The smallest natural number which is divisible by 11, 6, 55 and 9 is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 990.
LCM of 11, 6, 55, 9
Prime factors:
11 ⇒ 11
6 ⇒ 2 × 3
55 ⇒ 5 × 11
9 ⇒ 3 × 3
Take highest powers ⇒ 2 × 32 × 5 × 11 ⇒ 2 × 9 × 5 × 11 ⇒ 990