Question
In a two digit positive number, the digit in the
unit’s place is equal to the square of the digit in ten’s place, and the difference between the number and the number obtained by interchanging the digits is 54. What is 60% of the original number?Solution
Let the number = 10x + x 2 According to the question, 10x + x2 - (10x2 - x) = 54 9(x2 - x) = 54 x 2 - x = 6 x2 - x – 6 = 0 ( x - 3) (x + 2) = 0 x = 3 or x = -2 Number = 39 [x ≠ -2] 60% of 39 = (60/100) × 39 = 23.4
In these questions, relationship between different elements is shown in the statements. The statements are followed by conclusions.
Statements:...
Statements: Q $ W, W % E, E @ K
Conclusions: a) Q $ K b) W @ K
Statements: E & F, H # I, G $ F, E % D, G @ H
Conclusions:
I. D $ F
II. F @ I ...
Statements: A > B > C, C < D > E, E = F > G
Conclusion:
I. C = G
II. A > F
Statements:
E ≤ A > J ≥ L; Y > J < D
Conclusions:
I. D > L
II. A > L
In which of the following expressions will the expression ‘ Q > B ’ be definitely true?
Statements: K * D, D $ N, N % M, M © W
Conclusions: I.M % W II.M $ W III.N @ D�...
What should come in the place of question mark (?) in the given expression so that the expression T > Z is definitely true and Y ≥ W is definitely...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is/are definitely true and then...
Statements:
P > Q ≥ M ≤ N; Y ≥ Z ≥ A = P
Conclusion:
I. Y > N
II. N ≥ Y
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