Question
Ten numbers are arranged in decreasing order. The
average of the first nine numbers is 55, and the average of the last nine numbers is 50. What is the difference between the first and the last number?Solution
More No. System Questions
What value should come in the place of (?) in the following number series?
1.5, 2.5, 4, 6, ?, 11.5
76, 80, 89, 105, ?, 166
22, 37, 63, 98, 148, ?
60, 100, 160, 240, ?, 460
70, 95, 145, ?, 320, 445
25, 30, 50, 60, 80, ?
31 32 35 ? 47 56
...15, 90, 95, ?, 383, 766
If series II follows the same sequence pattern as series I shown below, determine the value of 'p'.
Series I: 3, 4, 9, 34, 159, 784
Se...
312, 302, 282, ?, 212, 162
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