Subject
Quantitative Aptitude
Topic
Number
If the mean of numbers 28, x, 42, 78 and 104 is 62, then what is the mean of 128, 255, 511, 1023 and x?
If the mean of numbers 28, x, 42, 78 and 104 is 62, then what is the mean of 128, 255, 511, 1023 and x?
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395খ)
275গ)
355ঘ)
415Explanation
The new mean =62+{(128+255+511+1023+x)−(28+x+42+78+104)}/5 =62+{(1917+x)−(252+x)}/5Related questions
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