1.

Find the greatest number of five digit exactly divisible by 9, 12, 15, 18, 24

Answer» To FIND:
 ⇒ The greatest number of five-digit EXACTLY divisible by 9, 12, 15, 18, 24.

Solution:
⇒ LCM of 9, 12, 15, 18 and 24 by division method is 360. The largest number of five digits = 99999.
⇒ The quotient when 99999 is DIVIDED by 360 is 277 and the remainder is 279.
⇒Greatest number of five digits divisible by 9, 12, 15, 18 and 24 = 99999 - 279 =99720.

⇒ ∴ The greatest number of five-digit exactly divisible by 9, 12, 15, 18, 24 = 99720

:)


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