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Let the speed of the boat in upstream be ‘2x’ km/h and in downstream be ‘3x’ km/h, respectively. According to the question: 
Speed of the boat in still water = (2x+3x)/2 = (5×14.4)/2 = 36 km/h.
If A denotes ‘addition’, B denotes ‘multiplication’, C denotes ‘subtraction’, and D denotes ‘division’, then what will be the value of t...
If '+' means '-', '×' means '+', '-' means '÷', and '÷' means '×', then what is the value of the following expression?
75 ÷ 5 + 312 × 18 - ...
If in a certain code language ‘+’ represents ‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’....
If ‘P’ means (÷), ‘Q’ means (×), ‘R’ means (+), and ‘S’ means (-), then what is the value of the expression:
900 P 15 R 26 Q 5 ...
If ‘–‘ means ‘addition’, ‘+’ means ‘subtraction’, ‘÷ ‘ means ‘multiplication‘ and ‘×’ means ‘division’ , then find t...
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 on the ...
Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
66 * 32 * 8...
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
3 * 12 * 4 * 5 * 4 * 116
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then ____ is the value of the expression.
25 A 5 B 8 D 6 C 4...
Which among the given operators should replace the “%” (in the same order) in the given expression below:
7 % 12 % 7 % 38 % 47 % 8
