Question
If 246x179y is divisible by 72, find the value of (x +
2y).Solution
ATQ,
Check divisibility by 8: Last 3 digits = 79y
Try y = 2 → 792 ÷ 8 = 99 ✅
Now check sum:
2 + 4 + 6 + x + 1 + 7 + 9 + 2 = (31 + x)
x = 5 → 36 ✅
Required value = (5 + 2×2) = (5 + 4) = 9
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