Question

Guess the secret number of Banno from the following hints
It is larger than half of 100
It is more than 6 tens and less than 7 tens
The tens digit is one more than the ones digit
Together the digits have a sum of 11 [ 3 mark ]

Answer 1

Half of 100 is 50
So it is larger than 50 [ 1 mark ]
6 tens is 60 and 7 tens is 70
So, the number is more than 60 but less than 70 [ 1 mark ]
The tens digit is one more than ones digit and the sum of digits is 11
So, the number is 65 because 6 + 5 =11 [ 1 mark ]