Question

1. If 4A5141B is divisible by 55, then find the value
of A + B.
(a) 11 or 0
(b) 10 or 0
(c) 13 or 2
(d) 12 or 1

Answer 1

Answer:

Correct option (B) 1

we know that,

A number which is divisible by 55 must also be divisible by 5 and 11.

here, the unit's digit is 5.

hence, it is divisible by 5.

Now,

if a number is divisible by 11 then the difference of sum of its digit in odd place and sum of its digits in even places is either 0 or multiple of 11.

i,.e., (4+B) -(a+5);= 9n where ,n ={0,1,2,3,.....}

= 4+b- a5=9n

= b-a -1 = 9n

= b-a = 1, 10,19 ,28.....

[ putting the values of n]

(B) is correct i.e., b- a= 1.

Step-by-step explanation:

hope it's helpful

Answer 2

Answer:

answer is A part :11 or 0

hope to is helpful