Question

if the number 653ab is divisible by 90 then a +b​

Answer 1

Answer:

to divisible by 90 it should be divisible by 9. hence the divisibility rule for 9 is the sum of individual numbers must be divisibe by 9 =.> 6+5+3+x+y should be divisible by 9

As 6+3=9 it can be removed then x+y+5=9 or its divisible one

hence x+y=4 is the least possible individual numbers

Step-by-step explanation:

answer is 4

hope it helps you

thanku

Answer 2

Answer:

if the number 653xy is divisible by 90

so, 653xy should be divisible by both 9 and 10

any number divisible by 10 should have zero at end of it's number

so, y = 0

so,the number is 653x0

any number divisible by 9 sum of it's digits should be divisible by 9

so, 6+5+3+0 = 14 divisible by 9 which will remainder of 5

so, 5+4 = 9 which divisible by 9

so, x = 4

so, the number is 65340 which is divisible by 90

x + y = 4+0 = 4

Step-by-step explanation:

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