Ashifur September 9, 2023 - 17:55
Problem: A man’s salary in 2014 was 20 thousand Taka per month and it is increased by 10% each year. Find how much he earned in the years 2015 to 2017 inclusive.

View all: RUPALI BANK LTD (CANCELLED) WRITTEN QUESTION (MATH) SOLVE | 2018

Correct Answer: prime number is 227 & 353.

Explanation:

Since the sum of the 3-digits is 11 and each digit represents a prime number.

So the 3-digits may be 2. 2, 7 or 3. 3. 5 because 2 + 2 + 7 = 11 and 3 + 3 + 5 =11

Now using the digit 2, 2, 7 we have the prime number 227. Because other two numbers i.e 722and 272 are divisible by 2 and thus are not prime.

Again, using the digit 3. 3. 5 we have the number 353 which is a prime number. But 533 which isdivisible by 13 and thus 533 is not prime and 335 is divisible by 5 and thus 335 is not prime.

So. the three-digit prime number whose sum of the digits is 11 and each digit representing aprime number is 227 & 353.

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