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Total age of 20 girls = 20 × 54 = 1080 years If the age of two more girls is added the average decreases by half a year, ∴ Total age of 22 girls = 53.5 × 22 = 1177 Now, sum of the age of new girls = 1177 – 1080 = 97 years
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
Change the question mark with the option that follows the applied logic in the first pair.
Bad : Good :: Destination : ??
What will come in place of '?' in the following equation, if '+' and '÷' are interchanged and '×' and '–' are interchanged?
56 × 16 + 8 ...
Find the analogous pair.
Annex : Lessening
A statement (A) and an argument (R) are given.
Statement (A): If carbon-dioxide increases, the glaciers will melt.
Rationale (R): Ea...
What should come in place of the question mark (?) in the given series?
22, 24, 28, 30, 34, ?
If ‘+’ means ‘divided by’. ‘ ̶ ’ means ‘added to’, ‘×’ means ‘subtracted from’ and ‘÷’ means ‘multiplied by’, what wi...
Read the given statements and conclusions carefully, Assuming that the information given in the statements is time, even if it appears to be at variance...
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(NOTE : Operations should be performed o...
Select the option that is related to the third number in the same way as the second number is related to the first number.
52 : 91 : : 72 : ?
