Question
If a nine-digit number 785x3678y is divisible by 72,
then the value of (x − y) is:Solution
The nine digit number is 785x3678y is divisible by 72, so we can say number also divisible by 8 and 9. 785x3678y is divisible by 8 if last digit three digit 78y is divisible by 8. 78y is divisible by 8 if y = 4 785x36784 is divisible by 9 if the sum of its digit is divisible by 9. => 7 + 8 + 5 + x + 3 + 6 + 7 + 8 + 4 => 48 + x Put x = 6 => 48 + 6 = 54 As we know, 54 is divisible by 9. Now, x – y = 6 - 4 = 2
More Divisibility rules Questions
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
[(4 √ (7) + √ (7)) × (7 √ (7) + 6 √ (7))] - 87 = ?
...132 × 3 ÷ 11 + 67 − ? = 64 ÷ 8 × 2
(√529 + 63 /8)% of 800 = ?% of 250
- What will come in the place of question mark (?) in the given expression?
32% of 74% of ? = 16% of 37% of 180 12% of 10% of 15% of 5000 + (12 x 15) = ?
√ (573 – 819 + 775) = ? ÷ 3
- What will come in place of (?), in the given expression.
(4² + 6²) × 2 = ? 8 × 12 + 110 ÷ 5 = 72 + ?
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