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The mean weight per student in a group of seven students is 55 kg If the individual weights of 6 students are 52, 58, 55, 53, 56 and 54; then weights of the seventh student is
  • a)
    55
  • b)
    56
  • c)
    57
  • d)
    58
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The mean weight per student in a group of seven students is 55 kg If t...
Total weight of 7 students is = 55× 7 = 385 kg
Sum of weight of 6 students = 52 + 58 + 55 + 53 + 56 + 54 = 328 kg
Weight of seventh student = 385 – 328 = 57kg.
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Most Upvoted Answer
The mean weight per student in a group of seven students is 55 kg If t...
Let G be a finite group with two subgroups M and N such that M∣=56 and ∣N∣=123. We are asked to determine the value of ∣M∩N∣.
The order of the intersection of subgroups M and N is ∣M∩N∣=1 because the identity element is common to both subgroups.
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Community Answer
The mean weight per student in a group of seven students is 55 kg If t...
Total weight of 7 students is = 55× 7 = 385 kg
Sum of weight of 6 students = 52 + 58 + 55 + 53 + 56 + 54 = 328 kg
Weight of seventh student = 385 – 328 = 57kg.
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