Question
The sum of three consecutive odd natural numbers each
divisible by 3 is 81. Which number is the largest number among the three numbers?Solution
Let the first number be x Other numbers be (x + 6) and (x + 12) According to the question, x + (x + 6) + (x + 12) = 81 3x = 63 x = 21 Largest number = 21 + 12 = 33
More No. System Questions
12, 6, 6, 9, 18, ?
77 ? 190 257 331 412
...10 625 50 125 250 25 ?
...90     211     67     236     ?     265
...1335Â Â Â Â Â Â 737Â Â Â Â Â Â Â Â 355Â Â Â Â Â Â Â Â 141Â Â Â Â Â Â Â Â 47Â Â Â Â Â Â Â Â Â Â ?
...Which of the following numbers will replace the question mark (?) in the given series?
69, 70, 74, 83, ?, 124
15Â Â Â Â Â Â Â Â Â Â Â Â 13 Â Â Â Â Â Â Â Â 28 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 54 Â Â Â Â Â Â Â Â 52
...4, 8, 24, ?, 840, 9240
If 6 4 x 5.75 9,
Then, (x²-1) = ?
...13 22 40 67 103 ?
...
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