Question
If the mean proportion of 1.44 and 2.25 is 'k', then find
the value of '5k'.Solution
k = √(1.44 × 2.25) = √3.24 = 1.8
Required value = 5 × 1.8 = 9
?, 6, 6, 9, 18, 45
What will come in place of the question mark (?) in the following series?
50, 70, 110, 190, 310, ?
What will come in place of the question mark (?) in the following number series?
180, 184, 168, 204, ?, 240
24 36 72 108 216 ?
16, 20, 11, 27, ?, 38
- What will come in place of (?) in the given number series.
121, 100, 81, 64, ?, 36 What will come in place of the question mark (?) in the following series?
225, 227, 233, 245, 265, ?
715Â Â Â 708Â Â Â 694Â Â Â 673Â Â Â Â 645Â Â Â Â ?
98, 122, 182, 278, 410, ?
76, 80, 89, 105, ?, 166