Question
Five friends each contributed Rs. 70. If the sixth
friend gives Rs. 50 more than the average contribution of all six, how much did the sixth friend contribute?Solution
ATQ,
Let the contribution of the sixth friend be Rs. 'p'. So, (70 × 5 + p) ÷ 6 + 50 = p Or, (350 + p) ÷ 6 = p - 50 Or, 350 + p = 6 × (p - 50) Or, 350 + p = 6p - 300 Or, 5p = 650 Or, p = 130
Find the Wrong number in the given number series.
2024, 1583, 1193, 822, 498, 209Find the wrong number in the given number series.
1000, 500, 250, 120, 62.535, 44, 28, 53, 19, 66
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
Find the wrong number in the given number series.
17, 36, 73, 134, 220, 352Â
120, 160, 220, 300, 400, 560
In each of the following number series, one term is wrong. Find the wrong term.
18, 16, 48, 46, 138, 140, 408
1 Â Â Â Â Â Â 3 Â Â Â Â Â Â 7 Â Â Â Â Â Â Â 15 Â Â Â Â Â Â Â 33
...Find the wrong no in the given number series.
11, 18, 32, 60, 112, 228
15, 30, 30, 20, 10, 8
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