Question
The average of 18 numbers is 12. If each number is
increased by 2, what will be the mean of the new set of numbers?Solution
Sum of 18 numbers = (18 × 12) = 216 After addition of 2 to each of the numbers, New sum = 216 + (18 × 2) = 252 So, required mean = (252/18) = 14 Alternate Solution Since, each number is increased by ‘2’. So, mean will also increase by ‘2’. So, required mean = 12 + 2 = 14
If '>' denotes '+', '<' denotes '-', '-' denotes '×', '×' denotes '÷', '÷' denotes '=', then choose the correct statement of the following.
...Which of the following symbols should replace the sign (@) respectively in the given expression in order to make the expression K ≥ N and H > M defin...
Statement: W > V; T > S > U; T < V
Conclusion:
I.W > U
II. W > S
Statements: J # Q, Q * D, D % P, P $ Y
Conclusions:Â Â Â Â Â Â I. Q * YÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. P *YÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â III...
Statements: S < V = J ≤ G < K, P > L > C, K = A > P
Conclusions:
I. V > P
II. C < K
III. A > S
If the expression E < B > D = G ≥ H is definitely true, which of the following would be definitely true?
In which of the following expressions will the expression ‘M ≥ N ' and ‘Q < O’ be definitely true?
Which of the following symbols should replace the question mark in the given expression, in order to make the expressions K < I as well as N &...
Statements: B < C ≤ D < A ≥ Y
Conclusion: I. A > B II. Y < C
...In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and t...
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