Question
The mean of 36 numbers was found as 42. Later on, it was
determined that a number 47 was misread as 41. Find the correct mean of the given numbers (rounded off to two places of decimal).Solution
ATQ, The original sum of the numbers was 42×36 =1512. The number 47 was misread as 41, so the sum is 6 less than it should be. To correct it, add 6 to the sum: 1512+6 = 1518. Divide the corrected sum by 36 to find the new mean: 1518÷36 = 42.17. So, the correct mean is 42.17.
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Select the option in which the numbers are NOT related in the same way as are the numbers of the following set.
(21, 15, 72)
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
(8, 4, 94)
(4, 9, 106)
(12, 1...
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...If 23 @ 18 = 9 and 29 @ 24 = 21', then 24 @ 19 = ?'. What will come in place of question mark?
- Select the option that is related to the third word in the same way as the second word is related to the first word.
Rigid: Flexible :: Transparent: ? Canberra : Australia :: Ottawa : ?
Select the option that is related to the third term in the same way as the second term is related to first term and the sixth term is related to the fi...
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