Question
The average age of a group of 20 students is 30 years.
Two persons of age 40 years and 35 years, left the group and 2 persons of age 50 years and 65 years, joined the group. Find the new average age of the group.Solution
Required average = {(20 × 30) – 40 – 35 + 50 + 65}/20 = 32 years
If 51 @ 24 = 9' and 56 @ 22 = 8', then 72 @ 32 = ?'. What will come in place of question mark?
Select the option in which the numbers are related in the same way as are the numbers of the following sets.
(8, 5, 43)
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Select the option that is related to the fourth term in the same way as the irst term is related to the second term.
ENWQ: DPTU :: CBUT : ?
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