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Question

Find the number based on the following given clues.

1. Number is a prime number.
2. It is more than 4 tens and less than 5 tens.
3. Together, the digits have a sum of 11.

A
45
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B
46
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C
47
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D
48
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Solution

The correct option is C 47
1. The number is a prime number .

2. 4 tens is 40 and 5 tens is 50. So, the number lies between 40 and 50.

3. Between 40 and 50, all numbers starts from 4. So, the tens digit is 4.

4. Together, the digits have a sum of 11. If we add 4 and 7, we get 11.
47 is also a prime number.
The number is 47.

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