5 எண்களின் சராசரி 50. முதல் 4 எண்கள் 45, 42, 119 மற்றும் 84 எனில், கடைசி எண் என்னவாக இருக்கும்?

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MP Police Constable Official Paper (Held On: 06 Feb, 2022 Shift 1)
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  1. -40
  2. +80
  3. -80
  4. +40

Answer (Detailed Solution Below)

Option 1 : -40
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கொடுக்கப்பட்டது:

5 எண்களின் சராசரி = 50

கணக்கீடு:

கடைசி எண் 'x' ஆக இருக்கட்டும்

5 எண்களின் சராசரி = 50 =  

⇒  250 = 290 + x

⇒  x = - 40

பதில் - 40.

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