1.

Replace A, B, C by suitable numerals

Answer»

We know that in the unit place 6 + A = 3

A = 3-6 = -3, which is not possible

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

∴ 6 + A = 13

A = 13-6 = 7

Now in tens place

B + 9 + 1 = 7 where 1 is carried over

B = 7-10 = -3, which is not possible

Since B is greater than 10, where, 1 is carried over to hundred’s place

B + 9 + 1 = 10+7

B = 17-10 = 7

∴ B = 7

Now in hundred’s place

C + 6 + 1 = 1 where, 1 is carried over

C= 1-7 = -6 which is not possible

Since C is greater than 10, where, 1 is carried over to hundred’s place

C + 6 + 1 = 1 + 10

C = 11 -7 = 4

∴ C = 4



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