Question

• मैं एक दो अंकों की संख्या हूँ।
• दहाई के स्थान पर अंक और इकाई के स्थान
पर अंक क्रमिक अभाज्य संख्याएँ हैं।
• अंकों का योग 3 और 4 का गुणज है।
संख्या है:
(1) 23
(2). 35
(3) 13
(4) 57​

Answer 1

The required answer is 57 (Option 4)

Step-by-step explanation:

The required number has 2 digits.

Both the digits are prime numbers

The addition of both the numbers yields a number that is divisible by 3 and 4

Lets look at the options

1. Option 1 is 23. Though the 2 digits are prime numbers, the addition of 2 and 3 yields 5 which is not divisible by 3 and 4.
2. Option 2 is 35. Though the 2 digits are prime numbers, the addition of 3 and 5 yields 8 which is divisible by 4, but not 3.  
3. Option 3 is 13. Though the 2 digits are prime numbers, the addition of 1 and 3 yields  4 which is divisible by 4, but not 3.  
4. Option 4 is 57. Here, both the digits are prime numbers and their addition yields 12, which is divisible by 3 and 4.  

Hence the required answer is 57 (Option 4)