The mean of 10 numbers is 7 If each number is multiplied by 10 then the mean of new set of numbers is
A70
B77
C80
D84
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The average weight of students in a class is 49kg. Five new students are admitted in the class whose weights are 45 kg, 46.8 kg, 47.4 kg, 54.2 kg and 63.6 kg. Now, the average weight of all the students in the class is 50 kg. The number of students in the class in the beginning was:
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52, 54, 56, 58 എന്നീ സംഖ്യകളുടെ ശരാശരി എത്ര?
തുടർച്ചയായി നാല് ഇരട്ട സംഖ്യകളുണ്ട്, അതായത് അവസാനത്തേയും ആദ്യത്തേയും സംഖ്യകളുടെ ശരാശരി 11 ആണ്, രണ്ടാമത്തെയും മൂന്നാമത്തെയും സംഖ്യകൾ തമ്മിലുള്ള തുക എന്താണ്?