Question

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Answer 1

1. The L.C.M. of 45 and 105 = 5×3×3×7
=315.
2. The H.C.F of 100 and 190 = 10.
The L.C.M of 100 and 190 = 1900.
The H.C.F of L.C.M = 1900 × 10 =
19000.
3. The H.C.F of 100 and 120 = 20.
The L.C.M of 100 and 120 = 600
4. The H.C.F. of 45 and x = 9.
The L.C.M of 45 and x = 360.
The x = 72.
5. Let the square number be 5.
And m = 3.
Now 8m + 1 = 5^2
8 × 3 + 1 = 25
24 + 1 = 25
25 = 25

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