In a 4 - digit number, the sum of the first two digits is equal to that of the last two digits. The sum of the first and last digits is equal to the third digit. Finally, the sum of the second and fourth digits is twice the sum of the other two digits. What is the third digit of the number?
Correct Answer : A
In some code, letters a, b, c, d and e represents numbers 2, 4, 5, 6 and 10. We just don't know which letter represents which number. Consider the following relationships:
i) a + c = e,
ii) b - d = d and
iii) e + a = b
Which statement below is true?
In a number system, the product of 44 and 11 is 1034. The number 3111 of this system, when converted to the decimal number system, becomes
The remainder when 784 is divided by 342 is :