Question

tens place digit of a two digit no. is 4 more than the unit place digit.The no formed by interchanging the 2 digits is 36 less than the original no.Find how many such ano. exist
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Answer 1

Answer:

one's digit= 1

ten's digit=5

number is 51

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Answer 2

6 numbers

xy = two digit number

x = y+4

y+4 y = y y+4 - 36

the numbers are :

40

51

62

73

84

95