Question

find the greatest number if five digit that can be divided by 70, 85,90

Answer 1

10000 is the right ans

Answer 2

Step 1 : Find LCM:

70 = 2 x 5 x 7

85 = 5 x 17

90 = 2 x 3² x 5

LCM = 2 x 3² x 5 x 7 x 17 = 10710

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Step 2: Find the quotient needed:

Largest 5 digit number = 99999

Number of 10710 = 99999 ÷ 10710 = 9 remainder: 3609

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Step 3: Find the largest 5 digit number divisible by all 3 numbers:

10710 x 9 = 96390

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Answer: 96360