SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · प्रश्न 63

The average of 13 numbers is 75. If the average of the first six numbers is 69 and the average of the last six numbers is 80, what is the 7th number?

  1. 81
  2. 82
  3. 83
  4. 84
उत्तर देखें और व्याख्या

उत्तर: (A) 81

व्याख्या

975 − 6×69 − 6×80 = 975 − 414 − 480 = 81.