maths - hcf

1) Find the least number when divide by 25, 45, 60 leaves reminder 20.

2) Find the least number which when divided by 18, 12, 24 leaves a reminder of 16, 10, 22 respectively.
Can U help me to find the answer.

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  1. Fine the least natural number which when divided by either 4 or 5 leave a reminder of 1

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