Question
Find the value of 'a' in the given data if the mean of
the given data is 27. 20, 25, 30, 28, 26, 24, a, 29, 22, 23Solution
Sum of each term of given data = 10 × 27 = 270 So, 20 + 25 + 30 + 28 + 26 + 24 + a + 29 + 22 + 23 = 270 Or, 227 + a = 270 Or, 'a' = 43 Hence, option C.
More No. System Questions
250 Â Â Â 25 Â Â Â Â 5 Â Â Â Â ? Â Â Â Â 0.6 Â Â Â Â Â 0.3
10296/72 + 3040 = (? × 4) + 1395
What value should come in the place of (?) in the following number series?
192, 96, 96, 144, ?, 72024, 168, 28, 140, 35, ?Â
What will come in place of the question mark (?) in the following series?
29, 42, ?, 95, 135, 184
840, 2520, 630, 3150, ?, 3675
3, 8, 27, 124, ?
120, 115, 120, 135, 160, ?
24  12  18  ?  157.5  708.75  3,898.125
23, 39, 64, 100, ?, 213
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