Question

I am less than $\frac{1}{4}$th of 200 and greater than 4 tens. I am a prime number. Sum of my digits is 7. Who am I?

• A. 61
• B. 71
• C. 34
• D. 43

Answer 1

The correct option is D 43

The given number is less than $\frac{1}{4}$th of 200.
Hence, it is less than 50.
It is also greater than 4 tens, that is, greater than 40.
Prime numbers between 40 and 50 = 41, 43, 47
Sum of digits = 7
Hence, 43 is the given number.