Question
If the mean of four observations is 20 and when a
constant C is added to each observation the mean becomes 22 the value of C is –Solution
=> Total of four observations = 4 × 20 = 80 Total of four observations after adding C in observation = 80 + 4C => 22 = (80 + 4C)/4 => C = 2
More Quant Miscellaneous Questions
- What will come in the place of question mark (?) in the given expression?
5555 ÷ 11 ÷ 5 = 100 +? 216% of 350 + 273 = ?2 × 21
(70% of 480) ÷ 6 + ? = 45% of 3500 + 802 + 272
What will come in place of (?) in the given expression.
√625 + 12 × 5 = ?If (3 × 144 – 252 ÷ 14) ÷ 18 = √1024 – x, then find the value of ‘x’.
1231 + 1312 + 2113 – 3211 = ?
(96% of 1100) + 92 × 4 = ? + 46 × 16
What will come in the place of question mark (?) in the given expression?
(252 + 198) ÷ ? + 126 ÷ 3 = 144 ÷ 2
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