Question

please help me in 4th question​

Answer 1

Answer:

52

Step-by-step explanation:

2+5 is equal to 7.

25 =52.

52-25 is equal to 27

Answer 2

Answer: 52

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let the digit at unit place be x

Let the digit at tens place be y

Therefore the no.= 10y+x

A.T.Q

Y+x=7___(1)

When digits reversed which means=10x+y is 27 less than the original no.

10x+y+27=10y+x

10x-x)+27=10y-y

9x+27=9y

9y-9x=27

9(y-x)=27

Y-x=3_____(2) (because 27/9=3)

(1)+(2)

》2y=10

=y=5

And by putting y in (1)

5+x=7

Therefore x=2

And the original no. = 10(5)+2

=52