Question

9341X82Y is divisible by 72. What is the value of XY + 2(X + Y)?​

Answer 1

Answer:

multiple of 72 is 8 and 9

so the number will be divided by 8 and 9

the rule of divisibility of 8 and 9 is applied

when the last three digit is divisible by 8 then the whole numbers are divisible by 8

and the sum of the all digits of the number must be divided by 9

so the number will be divisible by 72

first of all we check this number is divisible by 8

so 24Y on the place of Y what shoulb be??

according to rule...

Y=8 becoz 248 is divisible by 8

then we check by 9

so the sum of all digits =7+4+4+8+2+4+8=37

but the sum must multiple of 9

so it should 45 then

the value of X =45-37=8

therefore X-Y=0

Answer 2

Answer: The value of XY + 2(X + Y) therefore X-Y=0

Step-by-step explanation: multiple of 72 is 8 and 9

so the number will be divided by 8 and 9

the rule of divisibility of 8 and 9 is applied

when the last three digit is divisible by 8 then the whole numbers are divisible by 8

and the sum of the all digits of the number must be divided by 9

so the number will be divisible by 72

firstof all we check this number is divisible by 8

so 24Y on the place of Y what shoulb be??

according to rule...

Y=8 becoz 248 is divisible by 8

then we check by 9

so the sum of all digits =7+4+4+8+2+4+8=37

but the sum must multiple of 9

so it should 45 then

the value of X =45-37=8

therefore X-Y=0

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