Question

In 720*856, replace * by the smallest digit to make it divisible by 11.

Answer 1

Answer:

Step-by-step explanation:

For this you need to know the divisibility rule of 11

Divisibility rule of 11 is sum digits in even - sum of digits in odd= 0 or multiple of 11

7(at odd place) 2(at even place) 0(at odd place) *(at even place)8(at odd place) 5(at even place) 6(at odd place)

So odd =7+0+8+6 = 21

Even = 2+*+5 = 7+*

So our equation is (7+*) -21 = multiple of 11

So -14 +* = multiple of 11

Let's think, which multiple of 11 is close to -14

Yes it's -11 so to make -14 = -11 we will add 3 to it, so *=3