Question

If 90 is 5th common multiple of 9 and triangle, find smallest possible number for triangle.

Answer 1

Answer:

18

Step-by-step explanation:

If we divide 90 by 5 then, we get 18. Now, 18 is a multiple of 9.

Hence, the first common multiple of 9 and 18 is 18 itself.

The second common multiple of 9 and 18 is (18×2)=36.

The third common multiple of 9 and 18 is (18×3)= 54

The fourth common multiple of 9 and 18 is (18×4) =72

And similarly, the fifth common multiple of 9 and 18 is (18×5) =90.

Hence, the smallest possible number for triangle is 18. (Answer)