Question

in a two digits number the digits of tens pleac is greater then ones by 2. if the sum of digits is 12, then find the number​

Answer 1

Answer:

let unit digit = a

tens digit = a+2

given,

a + a+2 = 12

=> 2a = 12-2 = 10

=> a = 10/2 = 5

=> a+2 = 5+2 = 7

the number = 75

Answer 2

Answer:

Let the digit at the units place be 'x'

so ATQ, digit at tens place = x + 2

x + x + 2 = 12

2x + 2 = 12

2x = 10

x = 5

Therefore, digit at units place is 5 and digit at tens place = 5 + 2 = 7

so the number will be 7×10 + 5×1

=75

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