Question
This question is based on the following 3-digit
numbers: 543, 769, 552, 342, 245 (Example: 697 – First digit = 6, second digit = 9, and third digit = 7) If in each of the numbers, 1 is added to the first digit of every number, in how many numbers will the first digit be exactly divisible by the third digit of the same number?Solution
ATQ,
Add 1 to the first digit of each number and check if it's divisible by the third digit: 543 → 6 ÷ 3 ✅ 769 → 8 ÷ 9 ❌ 552 → 6 ÷ 2 ✅ 342 → 4 ÷ 2 ✅ 245 → 3 ÷ 5 ❌ ✅ Total valid numbers = 3
More No. System Questions
√3598 × √(230 ) ÷ √102= ?
15% of 2400 + (√ 484 – √ 256) = ?
(13)2 - 3127 ÷ 59 = ? x 4
6269 + 0.25 × 444 + 0.8 × 200 = ? × 15
...(53 + 480 ÷ 4)% of 20 = ?% of 70
Find the simplified value of the following expression:
62 + 122 × 5 - {272 + 162 - 422}
(15 × 225) ÷ (45 × 5) + 480 = ? + 25% of 1240
√ [? x 11 + (√ 1296)] = 16
11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
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