SSC Stenographer Grade C & D practice question
If the mean of 15 numbers is 25 and one number 36.2 is removed from the numbers, then the mean of the remaining numbers is:
From a SSC Stenographer Grade C & D General Awareness practice set · General Awareness
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Correct answer: (C) 24.2
Sum of 15 numbers = 15x25 = 375; removing 36.2 leaves a sum of 338.8 over 14 numbers, giving a new mean of 338.8/14 = 24.2.
हिंदी में प्रश्न
यिद 15 संख्याओं का माध्य 25 है और उनम' से एक संख्या 36.2 को हटा िदया जाए , तो शेष संख्याओं का माध्य िकतना होगा ?
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उत्तर और व्याख्या देखें
सही उत्तर: (C) 24.2
15 संख्याओं का योग = 15x25 = 375; 36.2 हटाने पर 14 संख्याओं का योग 338.8 शेष रहता है, नया औसत = 338.8/14 = 24.2।
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