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
What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘–‘ are interchanged and ‘×’ and ‘÷’ are interchanged?<...
In the given figure, how many pens are blue? Â
In a certain code language, 'MINT' is coded as '9735' and 'NEAR' is coded as '4568'.
What is the code for 'N' in the given code language?Â
‘Cataract’ is related to ‘Ophthalmology’ in the same way as ‘Neurosis’ is related to ‘______’.
In the given letter-cluster pairs, the first letter-cluster is related to the second letter- cluster following a certain logic. Study the given pairs ca...
Five words have been given, out of which four are alike in some manner and one is different. Select the odd one.
Cataract, Cellulitis, Glaucom...
Select the option in which figure is embedded.
A, B, C, D, E and F live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 a...
Select the option that is related to the third number in the same way as the second number is related to the first number.
9 : 90 : : 15 :?
 Identify the figure from the given options that can replace the question mark (?) and logically complete the series.
Relevant for Exams:
