Question
Average of 20 numbers is 90. Average of first 8 numbers
is 103 while average of last nine numbers is 40. If ninth number is 25% less than the tenth number which is equal to the eleventh numbers then find the tenth number.Solution
Sum of ninth, tenth and eleventh number = 20 × 90 – 8 × 103 – 9 × 40 = 616 Let tenth number = x = eleventh number So, ninth number = 0.75 × x = 0.75x So, x + 0.75x + x = 616 Or, 2.75x = 616 Or, x = 224
34Â Â Â 35Â Â Â Â 44Â Â Â Â 69Â Â Â 118Â Â Â ?
219 365 511 ? 803 949
...D irection: Which of the following will replace ‘?’ in the following series
9, ‘?’, 1242, 1581, 1783
...96Â Â Â 111Â Â Â 131Â Â Â ? Â Â Â Â Â 186Â Â Â Â 221
231Â Â Â 451Â Â Â Â Â Â 671Â Â Â Â Â 242Â Â Â Â Â Â 485Â Â Â Â Â Â Â 264
...18Â Â Â Â Â Â Â Â Â Â Â Â 29 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 51 Â Â Â Â Â Â Â Â 84 Â Â Â Â Â Â Â Â 128 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 182
13, 14, 18, 27, 43, ?
To find the Next number in the given series.
0 6 24 60 120 ?
...56, 57, 49, 76, 12, ?
5Â Â Â Â 13Â Â Â Â 36Â Â Â Â 145Â Â Â Â Â 719Â Â Â Â 4321
