If a nine-digit number 43x1145y2 is divisible by 88, then the value of (2x-y), for the largest value of y, is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. -1.
Last 3 digits = 5y2 → divisible by 8 → y = 9 (since 592 ÷ 8 = 74)
Alternating sum = 4 - 3 + x - 1 + 1 - 4 + 5 - 9 + 2 = x - 4 → divisible by 11 → x = 4
2x - y = 2(4) - 9 = -1