Question

an
8. In each of the following replace * by a digit so that the number formed is divisible
by 11:
(1) 8 * 9484
(ii) 9 * 53762​

Answer 1

Step-by-step explanation:

for divisble by 11 the rule is

Take the alternating sum of the digits in the number, read from left to right. If that is divisible b 11 then number is also divisible by 11

8*9484

just asuume * as x

now

8-x+9-4+8-4

25-x-8

17-x should be divisble by 11

17 - x = 11

x = 6

do same for ii also

9-x+5-3+7-6+2

23-9-x

14-x=11

x=3