Question

Findthegreatestnumberthatwilldivide140,170,155leavingremainder5ineachcase.​

Answer 1

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140–5 = 135

170–5 = 165

155–5 = 150

Factors of

135 = 3x3x3x5

165 = 3x5x11

150 = 2x3x5x5

HCF = 3x5 = 15.

So, the greatest number which on dividing 140, 170, or 155, leaves 5 as a remainder in each case is 15. Answer.

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Answer 2

Answer:

140–5 = 135

170–5 = 165

155–5 = 150

Factors of

135 = 3x3x3x5

165 = 3x5x11

150 = 2x3x5x5

HCF = 3x5 = 15.

So, the greatest number which on dividing 140, 170, or 155, leaves 5 as a remainder in each case is 15. Answer.