1.

Replace A, B, C by suitable numerals

Answer»

We know that in the unit place A + 7 = 3

A = 3-7 = -4, which is not possible

Since A is greater than 10, where, 1 is carried over to tens place

∴ A + 7 = 13

A = 13-7 = 6

Now in tens place

5 + 8 + 1 = B where 1 is carried over

∴ B = 14

Here, 1 is carried over to hundred’s place

∴ C = 1



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